for Journals by Title or ISSN
for Articles by Keywords
help
  Subjects -> EDUCATION (Total: 1956 journals)
    - ADULT EDUCATION (24 journals)
    - COLLEGE AND ALUMNI (9 journals)
    - E-LEARNING (24 journals)
    - EDUCATION (1654 journals)
    - HIGHER EDUCATION (126 journals)
    - INTERNATIONAL EDUCATION PROGRAMS (4 journals)
    - ONLINE EDUCATION (30 journals)
    - SCHOOL ORGANIZATION (13 journals)
    - SPECIAL EDUCATION AND REHABILITATION (35 journals)
    - TEACHING METHODS AND CURRICULUM (37 journals)

EDUCATION (1654 journals)                  1 2 3 4 5 6 7 8 | Last

Showing 1 - 200 of 857 Journals sorted alphabetically
#Tear : Revista de Educação, Ciência e Tecnologia     Open Access   (Followers: 2)
(Pensamiento), (palabra) y obra     Open Access   (Followers: 2)
21. Yüzyılda Eğitim Ve Toplum Eğitim Bilimleri Ve Sosyal Araştırmalar Dergisi     Open Access  
@tic. revista d'innovació educativa     Open Access  
Abant İzzet Baysal Üniversitesi Eğitim Fakültesi Dergisi     Open Access   (Followers: 1)
About Campus     Hybrid Journal   (Followers: 6)
Academic Medicine     Full-text available via subscription   (Followers: 61)
Academic Psychiatry     Full-text available via subscription   (Followers: 24)
Academic Questions     Hybrid Journal   (Followers: 8)
Academy of Educational Leadership Journal     Full-text available via subscription   (Followers: 60)
Academy of Management Learning and Education     Full-text available via subscription   (Followers: 52)
Accounting & Finance     Hybrid Journal   (Followers: 51)
Accounting Education: An International Journal     Hybrid Journal   (Followers: 20)
Açıköğretim Uygulamaları ve Araştırmaları Dergisi     Open Access  
ACM Transactions on Computing Education (TOCE)     Hybrid Journal   (Followers: 6)
Acta Didactica Norge     Open Access   (Followers: 1)
Acta Educationis Generalis     Open Access  
Acta Scientiarum. Education     Open Access  
Action in Teacher Education     Hybrid Journal   (Followers: 62)
Action Learning: Research and Practice     Hybrid Journal   (Followers: 40)
Action Research     Hybrid Journal   (Followers: 46)
Active Learning in Higher Education     Hybrid Journal   (Followers: 271)
Actualidades Pedagógicas     Open Access  
Adelphi series     Hybrid Journal   (Followers: 14)
Adiyaman University Journal of Educational Sciences     Open Access   (Followers: 1)
Administration & Society     Hybrid Journal   (Followers: 13)
Administrative Science Quarterly     Full-text available via subscription   (Followers: 173)
Adult Education Quarterly     Hybrid Journal   (Followers: 157)
Advanced Education     Open Access   (Followers: 10)
Advances in Building Education     Open Access   (Followers: 3)
Advances in Health Sciences Education     Hybrid Journal   (Followers: 28)
Advances in High Energy Physics     Open Access   (Followers: 19)
Advances in School Mental Health Promotion     Partially Free   (Followers: 8)
AERA Open     Open Access   (Followers: 8)
Africa Education Review     Partially Free   (Followers: 24)
African Journal of Chemical Education     Open Access   (Followers: 3)
African Journal of Educational Studies in Mathematics and Sciences     Full-text available via subscription   (Followers: 5)
African Journal of Health Professions Education     Open Access   (Followers: 6)
African Journal of Research in Mathematics, Science and Technology Education     Full-text available via subscription   (Followers: 8)
Agora     Full-text available via subscription   (Followers: 4)
AGORA Magazine     Open Access  
Ahi Evran Üniversitesi Kırşehir Eğitim Fakültesi Dergisi     Open Access  
Ahmad Dahlan Journal of English Studies     Open Access   (Followers: 2)
AIDS Education and Prevention     Full-text available via subscription   (Followers: 7)
Ainedidaktiikka     Open Access  
Akadémiai Értesítö     Full-text available via subscription  
Aksiologiya : Jurnal Pengabdian Kepada Masyarakat     Open Access  
AKSIOMA Journal of Mathematics Education     Open Access   (Followers: 1)
Al-Idarah : Jurnal Kependidikan Islam     Open Access  
Al-Jabar : Jurnal Pendidikan Matematika     Open Access   (Followers: 1)
Al-Tadzkiyyah : Jurnal Pendidikan Islam     Open Access  
Alan Eğitimi Araştırmaları Dergisi     Open Access  
Alexandria : Revista de Educação em Ciência e Tecnologia     Open Access  
Alsic : Apprentissage des Langues et Systèmes d'Information et de Communication     Open Access   (Followers: 16)
Alteridad     Open Access  
Amasya Universitesi Egitim Fakültesi Dergisi     Open Access  
Ambiente & Educação : Revista de Educação Ambiental     Open Access  
American Annals of the Deaf     Full-text available via subscription   (Followers: 13)
American Biology Teacher     Full-text available via subscription   (Followers: 14)
American Educational Research Journal     Hybrid Journal   (Followers: 164)
American Journal of Business Education     Open Access   (Followers: 12)
American Journal of Distance Education     Hybrid Journal   (Followers: 34)
American Journal of Education     Full-text available via subscription   (Followers: 190)
American Journal of Educational Research     Open Access   (Followers: 62)
American Journal of Health Education     Hybrid Journal   (Followers: 31)
American Journal of Physics     Full-text available via subscription   (Followers: 53)
American String Teacher     Full-text available via subscription   (Followers: 1)
Ana Dili Eğitimi Dergisi / Journal of Mother Tongue Education     Open Access  
Anadolu Journal Of Educational Sciences International     Open Access  
ANALES de la Universidad Central del Ecuador     Open Access   (Followers: 3)
Annali dell'Universita di Ferrara     Hybrid Journal  
Annals of Dyslexia     Hybrid Journal   (Followers: 10)
Annals of Modern Education     Full-text available via subscription   (Followers: 4)
Apertura. Revista de innovación educativa‏     Open Access   (Followers: 2)
Applied Environmental Education & Communication     Hybrid Journal   (Followers: 16)
Applied Measurement in Education     Hybrid Journal   (Followers: 9)
Arabia     Open Access  
Art Design & Communication in Higher Education     Hybrid Journal   (Followers: 23)
Arts and Humanities in Higher Education     Hybrid Journal   (Followers: 37)
Arts Education Policy Review     Hybrid Journal   (Followers: 5)
Artseduca : Revista electrónica de educación en las ARTES     Open Access  
ASHE Higher Education Reports     Hybrid Journal   (Followers: 15)
Asia Pacific Education Review     Hybrid Journal   (Followers: 12)
Asia Pacific Journal of Education     Hybrid Journal   (Followers: 22)
Asia-Pacific Education Researcher     Hybrid Journal   (Followers: 12)
Asia-Pacific Journal of Health, Sport and Physical Education     Hybrid Journal   (Followers: 9)
Asia-Pacific Journal of Teacher Education     Hybrid Journal   (Followers: 24)
Asian Association of Open Universities Journal     Open Access   (Followers: 1)
Asian Education and Development Studies     Hybrid Journal   (Followers: 5)
Asian Journal of English Language Teaching     Full-text available via subscription   (Followers: 14)
Asian Journal of Legal Education     Full-text available via subscription   (Followers: 5)
ASp     Open Access   (Followers: 2)
Assessing Writing     Hybrid Journal   (Followers: 11)
Assessment & Evaluation in Higher Education     Hybrid Journal   (Followers: 144)
Assessment for Effective Intervention     Hybrid Journal   (Followers: 14)
Assessment in Education: Principles, Policy & Practice     Hybrid Journal   (Followers: 42)
Assessment Update     Hybrid Journal   (Followers: 5)
AStA Wirtschafts- und Sozialstatistisches Archiv     Hybrid Journal   (Followers: 5)
At-Ta'dib Jurnal Kependidikan Islam     Open Access  
At-Taqaddum     Open Access  
At-Turats     Open Access  
Athenea Digital     Open Access  
Aula Abierta     Open Access   (Followers: 1)
Aula de Encuentro     Open Access  
Australasian Journal of Educational Technology     Open Access   (Followers: 19)
Australasian Journal of Gifted Education     Full-text available via subscription   (Followers: 6)
Australasian Journal of Special Education     Full-text available via subscription   (Followers: 8)
Australasian Marketing Journal (AMJ)     Hybrid Journal   (Followers: 4)
Australian Art Education     Full-text available via subscription   (Followers: 8)
Australian Educational and Developmental Psychologist, The     Full-text available via subscription   (Followers: 8)
Australian Educational Computing     Open Access   (Followers: 1)
Australian Educational Researcher     Hybrid Journal   (Followers: 25)
Australian Journal of Adult Learning     Full-text available via subscription   (Followers: 16)
Australian Journal of Career Development     Hybrid Journal   (Followers: 3)
Australian Journal of Dyslexia and Learning Difficulties     Full-text available via subscription   (Followers: 8)
Australian Journal of Education     Hybrid Journal   (Followers: 36)
Australian Journal of Environmental Education     Full-text available via subscription   (Followers: 7)
Australian Journal of Indigenous Education, The     Full-text available via subscription   (Followers: 10)
Australian Journal of Learning Difficulties     Hybrid Journal   (Followers: 5)
Australian Journal of Music Education     Full-text available via subscription   (Followers: 5)
Australian Journal of Public Administration     Hybrid Journal   (Followers: 455)
Australian Journal of Teacher Education     Open Access   (Followers: 22)
Australian Mathematics Teacher, The     Full-text available via subscription   (Followers: 6)
Australian Primary Mathematics Classroom     Full-text available via subscription   (Followers: 4)
Australian Screen Education Online     Full-text available via subscription   (Followers: 2)
Australian TAFE Teacher     Full-text available via subscription   (Followers: 4)
Australian Universities' Review, The     Full-text available via subscription   (Followers: 4)
Autism     Hybrid Journal   (Followers: 279)
Avaliação : Revista da Avaliação da Educação Superior (Campinas)     Open Access  
Azalea: Journal of Korean Literature & Culture     Full-text available via subscription   (Followers: 4)
Bahastra     Open Access  
Balkan Region Conference on Engineering and Business Education     Open Access   (Followers: 1)
BELIA : Early Childhood Education Papers     Open Access   (Followers: 7)
BELT - Brazilian English Language Teaching Journal     Open Access   (Followers: 4)
Biblioteca Escolar em Revista     Open Access  
Biblioteka i Edukacja     Open Access   (Followers: 4)
Bildung und Erziehung     Hybrid Journal   (Followers: 5)
Bioedukasi : Jurnal Pendidikan Biologi FKIP UM Metro     Open Access  
Bioma : Jurnal Ilmiah Biologi     Open Access  
Biosaintifika : Journal of Biology & Biology Education     Open Access   (Followers: 7)
Biosfer : Jurnal Biologi dan Pendidikan Biologi     Open Access  
Biosfer : Jurnal Tadris Biologi     Open Access  
BMC Medical Education     Open Access   (Followers: 42)
BMJ Simulation & Technology Enhanced Learning     Hybrid Journal   (Followers: 10)
BoEM - Boletim online de Educação Matemática     Open Access  
Boletim Cearense de Educação e História da Matemática     Open Access  
Boletim de Educação Matemática     Open Access  
Boletim Técnico do Senac     Open Access  
BOSAPARIS : Pendidikan Kesejahteraan Keluarga     Open Access  
British Educational Research Journal     Hybrid Journal   (Followers: 183)
British Journal of Educational Studies     Hybrid Journal   (Followers: 151)
British Journal of Educational Technology     Hybrid Journal   (Followers: 139)
British Journal of Music Education     Hybrid Journal   (Followers: 24)
British Journal of Religious Education     Hybrid Journal   (Followers: 9)
British Journal of Sociology of Education     Hybrid Journal   (Followers: 50)
British Journal of Special Education     Hybrid Journal   (Followers: 48)
British Journal of Visual Impairment     Hybrid Journal   (Followers: 12)
Brookings Trade Forum     Full-text available via subscription   (Followers: 3)
Business, Management and Education     Open Access   (Followers: 17)
Caderno Brasileiro de Ensino de Física     Open Access  
Caderno Intersabares     Open Access  
Cadernos CEDES     Open Access   (Followers: 1)
Cadernos de Educação     Open Access  
Cadernos de Pesquisa     Open Access  
Cadernos de Pesquisa     Open Access   (Followers: 2)
Cadernos de Pesquisa em Educação     Open Access   (Followers: 1)
Cadmo     Full-text available via subscription   (Followers: 1)
Cahiers de la recherche sur l'éducation et les savoirs     Open Access   (Followers: 4)
Cakrawala Pendidikan     Open Access  
Calidad en la educación     Open Access   (Followers: 1)
Cambridge Journal of Education     Hybrid Journal   (Followers: 96)
Campus Legal Advisor     Hybrid Journal   (Followers: 2)
Campus Security Report     Hybrid Journal  
Canadian and International Education     Open Access   (Followers: 8)
Canadian Journal for New Scholars in Education/ Revue canadienne des jeunes chercheures et chercheurs en éducation     Open Access   (Followers: 7)
Canadian Journal for the Scholarship of Teaching and Learning     Open Access   (Followers: 15)
Canadian Journal of Education : Revue canadienne de l'éducation     Open Access   (Followers: 8)
Canadian Journal of Higher Education     Open Access   (Followers: 24)
Canadian Journal of Learning and Technology / La revue canadienne de l’apprentissage et de la technologie     Open Access   (Followers: 17)
Canadian Journal of School Psychology     Hybrid Journal   (Followers: 10)
Canadian Journal of Science, Mathematics and Technology Education     Hybrid Journal   (Followers: 19)
Career Development and Transition for Exceptional Individuals     Hybrid Journal   (Followers: 7)
Catalejos. Revista sobre lectura, formación de lectores y literatura para niños     Open Access  
Catharsis : Journal of Arts Education     Open Access  
CELE Exchange, Centre for Effective Learning Environments     Full-text available via subscription   (Followers: 1)
Cendekia : Jurnal Kependidikan dan Kemasyarakatan     Open Access  
Change: The Magazine of Higher Learning     Hybrid Journal   (Followers: 16)
Changing English: Studies in Culture and Education     Hybrid Journal   (Followers: 4)
Charrette     Open Access  
Chemical Engineering Education     Full-text available via subscription   (Followers: 1)
Chemistry Education Research and Practice     Free   (Followers: 5)
Chemistry in Education     Open Access   (Followers: 9)
Chi'e : Journal of Japanese Learning and Teaching     Open Access   (Followers: 3)
Child Language Teaching and Therapy     Hybrid Journal   (Followers: 30)
Child Psychiatry & Human Development     Hybrid Journal   (Followers: 10)
Childhood Education     Hybrid Journal   (Followers: 17)
Children's Literature in Education     Hybrid Journal   (Followers: 11)
Chinese Education & Society     Full-text available via subscription   (Followers: 4)
Christian Higher Education     Hybrid Journal   (Followers: 2)
Christian Perspectives in Education     Open Access   (Followers: 7)

        1 2 3 4 5 6 7 8 | Last

Journal Cover
Advances in High Energy Physics
Journal Prestige (SJR): 0.866
Citation Impact (citeScore): 2
Number of Followers: 19  

  This is an Open Access Journal Open Access journal
ISSN (Print) 1687-7357 - ISSN (Online) 1687-7365
Published by Hindawi Homepage  [338 journals]
  • From de Sitter to de Sitter: Decaying Vacuum Models as a Possible Solution
           to the Main Cosmological Problems

    • Abstract: Decaying vacuum cosmological models evolving smoothly between two extreme (very early and late time) de Sitter phases are able to solve or at least to alleviate some cosmological puzzles; among them we have (i) the singularity, (ii) horizon, (iii) graceful-exit from inflation, and (iv) the baryogenesis problem. Our basic aim here is to discuss how the coincidence problem based on a large class of running vacuum cosmologies evolving from de Sitter to de Sitter can also be mollified. It is also argued that even the cosmological constant problem becomes less severe provided that the characteristic scales of the two limiting de Sitter manifolds are predicted from first principles.
      PubDate: Thu, 16 Aug 2018 00:00:00 +000
       
  • More on the Non-Gaussianity of Perturbations in a Nonminimal Inflationary
           Model

    • Abstract: We study nonlinear cosmological perturbations and their possible non-Gaussian character in an extended nonminimal inflation where gravity is coupled nonminimally to both the scalar field and its derivatives. By expansion of the action up to the third order, we focus on the nonlinearity and non-Gaussianity of perturbations in comparison with recent observational data. By adopting an inflation potential of the form , we show that, for , for instance, this extended model is consistent with observation if in appropriate units. By restricting the equilateral amplitude of non-Gaussianity to the observationally viable values, the coupling parameter is constrained to the values .
      PubDate: Wed, 15 Aug 2018 00:00:00 +000
       
  • Quaternionic Approach to Dual Magnetohydrodynamics of Dyonic Cold Plasma

    • Abstract: The dual magnetohydrodynamics of dyonic plasma describes the study of electrodynamics equations along with the transport equations in the presence of electrons and magnetic monopoles. In this paper, we formulate the quaternionic dual fields equations, namely, the hydroelectric and hydromagnetic fields equations which are an analogous to the generalized Lamb vector field and vorticity field equations of dyonic cold plasma fluid. Further, we derive the quaternionic Dirac-Maxwell equations for dual magnetohydrodynamics of dyonic cold plasma. We also obtain the quaternionic dual continuity equations that describe the transport of dyonic fluid. Finally, we establish an analogy of Alfven wave equation which may generate from the flow of magnetic monopoles in the dyonic field of cold plasma. The present quaternionic formulation for dyonic cold plasma is well invariant under the duality, Lorentz, and CPT transformations.
      PubDate: Tue, 14 Aug 2018 06:07:43 +000
       
  • Mutual Correlation in the Shock Wave Geometry

    • Abstract: We probe the shock wave geometry with the mutual correlation in a spherically symmetric Reissner-Nordström AdS black hole on the basis of the gauge/gravity duality. In the static background, we find that the regions living on the boundary of the AdS black holes are correlated provided the considered regions on the boundary are large enough. We also investigate the effect of the charge on the mutual correlation and find that the bigger the value of the charge is, the smaller the value of the mutual correlation will be. As a small perturbation is added at the AdS boundary, the horizon shifts and a dynamical shock wave geometry form after long time enough. In this dynamic background, we find that the greater the shift of the horizon is, the smaller the mutual correlation will be. Especially for the case that the shift is large enough, the mutual correlation vanishes, which implies that the considered regions on the boundary are uncorrelated. The effect of the charge on the mutual correlation in this dynamic background is found to be the same as that in the static background.
      PubDate: Mon, 13 Aug 2018 09:34:09 +000
       
  • Energy Definition and Dark Energy: A Thermodynamic Analysis

    • Abstract: Accepting the Komar mass definition of a source with energy-momentum tensor and using the thermodynamic pressure definition, we find a relaxed energy-momentum conservation law. Thereinafter, we study some cosmological consequences of the obtained energy-momentum conservation law. It has been found out that the dark sectors of cosmos are unifiable into one cosmic fluid in our setup. While this cosmic fluid impels the universe to enter an accelerated expansion phase, it may even show a baryonic behavior by itself during the cosmos evolution. Indeed, in this manner, while behaves baryonically, a part of it, namely, which is satisfying the ordinary energy-momentum conservation law, is responsible for the current accelerated expansion.
      PubDate: Thu, 09 Aug 2018 08:15:03 +000
       
  • Phase Transition in Horava Gravity

    • Abstract: We present another example of superfluid black hole containing phase transition in Horava gravity. After studying the extended thermodynamics of general dimensional Horava-Lifshitz AdS black holes, it is found that only the one with spherical horizon in four and five dimensions has phase transition, which is a line of (continuous) second-order phase transitions and was famous in the discussion of superfluidity of liquid . The “superfluid” black hole phase and “normal” black hole phase are also distinguished. Particularly, six-dimensional Horava-Lifshitz AdS black holes exhibit infinitely many critical points in plane and the divergent points for specific heat, for which they only contain the “normal” black hole phase and the “superfluid” black hole phase disappears due to the physical temperature constraint; therefore there is no similar phase transition. In more than six dimensions, there is no critical behavior. After choosing the appropriate ordering field, we study the critical phenomena in different planes of thermodynamical phase space. We also calculate the critical exponents, which are the same as the van der Waals fluid.
      PubDate: Thu, 09 Aug 2018 08:05:55 +000
       
  • Predictions for the Isolated Diphoton Production through NNLO in QCD and
           Comparison to the 8 TeV ATLAS Data

    • Abstract: We present cross-section predictions for the isolated diphoton production in next-to-next-to-leading order (NNLO) QCD using the computational framework MATRIX. Both the integrated and the differential fiducial cross-sections are calculated. We found that the arbitrary setup of the isolation procedure introduces uncertainties with a size comparable to the estimation of the theoretical uncertainties obtained with the customary variation of the factorization and renormalization scales. This fact is taken into account in the final result.
      PubDate: Tue, 07 Aug 2018 07:43:28 +000
       
  • Stefan-Boltzmann Law and Casimir Effect for the Scalar Field in Phase
           Space at Finite Temperature

    • Abstract: We use the scalar field constructed in phase space to analyze the analogous Stefan-Boltzmann law and Casimir effect, both of them at finite temperature. The temperature is introduced by Thermo Field Dynamics (TFD) formalism and the quantities are analyzed once projected in the space of coordinates. We show that using the framework of phase space it is possible to introduce a thermal energy which is related to temperature as it vanishes when the temperature tends to zero. In fact given such a correlation the formalism of TFD is equivalent when project is in momenta space when compared to coordinates space.
      PubDate: Tue, 07 Aug 2018 00:00:00 +000
       
  • Neutrino Mass, Coupling Unification, Verifiable Proton Decay, Vacuum
           Stability, and WIMP Dark Matter in SU(5)

    • Abstract: Nonsupersymmetric minimal SU(5) with Higgs representations and and standard fermions in is well known for its failure in unification of gauge couplings and lack of predicting neutrino masses. Like standard model, it is also affected by the instability of the Higgs scalar potential. We note that extending the Higgs sector by and not only leads to the popular type-II seesaw ansatz for neutrino masses with a lower bound on the triplet mass GeV, but also achieves precision unification of gauge couplings without proliferation of nonstandard light Higgs scalars or fermions near the TeV scale. Consistent with recent LUX-2016 lower bound, the model easily accommodates a singlet scalar WIMP dark matter near the TeV scale which resolves the vacuum stability issue even after inclusion of heavy triplet threshold effect. We estimate proton lifetime predictions for including uncertainties due to input parameters and threshold effects due to superheavy Higgs scalars and superheavy gauge bosons. The predicted lifetime is noted to be verifiable at Super Kamiokande and Hyper Kamiokande experiments.
      PubDate: Mon, 06 Aug 2018 00:00:00 +000
       
  • A Heavy Scalar at the LHC from Vector-Boson Fusion

    • Abstract: A hypothetical scalar mixed with the standard model Higgs appears in few contexts of new physics. This study addresses the question what mass range is in the reach of TeV LHC given different magnitudes of mixing angle , where event simulations are based on production from vector-boson fusion channel and decays into SM leptons through or . It indicates that heavy scalar mass up to GeV and GeV can be excluded by integrated luminosity of 300 and 3000 , respectively, for larger than .
      PubDate: Thu, 02 Aug 2018 06:31:19 +000
       
  • Topological Gravity on -Shift Superspace Formulation

    • Abstract: We reassess the subject of topological gravity by following the shift supersymmetry formalism. The gauge-fixing of the theory goes under the Batalin-Vilkovisky (BV) prescription based on a diagram that contains both ghost and antighost superfields, associated with the supervielbein and the super-Lorentz connection. We extend the formulation of the topological gravity action to an arbitrary number of dimensions of the shift superspace by adopting a formulation based on the gauge-fixing for BF-type models.
      PubDate: Wed, 01 Aug 2018 00:00:00 +000
       
  • Study of Rare Mesonic Decays Involving Di-Neutrinos in Their Final State

    • Abstract: We have studied phenomenological implication of R-parity violating () Minimal Supersymmetric Model (MSSM) via analyses of pure leptonic () and semileptonic decays of pseudoscalar mesons (). These analyses involve comparison between theoretical predictions made by MSSM and the Standard Model (SM) with the experimental results like branching fractions of the said process. We have found, in general, that contribution dominates over the SM contribution, i.e., by a factor of for the pure leptonic decays of and by and in case of and , respectively. Furthermore, the limits obtained on Yukawa couplings by using are used to calculate This demonstrates the role of MSSM as a viable model for the study of new physics contribution in rare decays at places like Super B factories, KOTO (J-PARC) and NA62 at CERN.
      PubDate: Wed, 01 Aug 2018 00:00:00 +000
       
  • A New Model for Calculating the Ground and Excited States Masses Spectra
           of Doubly Heavy Baryons

    • Abstract: Since the doubly heavy baryons masses are experimentally unknown (except and ), we present the ground state masses and the positive and negative parity excited state masses of doubly heavy baryons. For this purpose, we have solved the six-dimensional hyperradial Schrödinger equation analytically for three particles under the hypercentral potential by using the ansatz approach. In this paper, the hypercentral potential is regarded as a combination of the color Coulomb plus linear confining term and the six-dimensional harmonic oscillator potential. We also added the first-order correction and the spin-dependent part contains three types of interaction terms (the spin-spin term, spin-orbit term, and tensor term) to the hypercentral potential. Our obtained masses for the radial excited states and orbital excited states of ,,,,, and systems are compared with other theoretical reports, which could be a beneficial tool for the interpretation of experimentally unknown doubly heavy baryons spectrum.
      PubDate: Thu, 26 Jul 2018 00:00:00 +000
       
  • Study of Homogeneous and Isotropic Universe in Gravity

    • Abstract: This paper is devoted to study the cosmological behavior of homogeneous and isotropic universe model in the context of gravity, where is the scalar field. For this purpose, we follow the first-order formalism defined by . We evaluate Hubble parameter, effective equation of state parameter , deceleration parameter, and potential of scalar field for three different values of . We obtain phantom era in some cases for the early times. It is found that exponential expression of yields independent of time for flat universe and independent of model parameter otherwise. It is concluded that our model corresponds to CDM for both initial and late times.
      PubDate: Thu, 26 Jul 2018 00:00:00 +000
       
  • Heun Functions and Some of Their Applications in Physics

    • Abstract: Most of the theoretical physics known today is described by using a small number of differential equations. For linear systems, different forms of the hypergeometric or the confluent hypergeometric equations often suffice to describe the system studied. These equations have power series solutions with simple relations between consecutive coefficients and/or can be represented in terms of simple integral transforms. If the problem is nonlinear, one often uses one form of the Painlevé equations. There are important examples, however, where one has to use higher order equations. Heun equation is one of these examples, which recently is often encountered in problems in general relativity and astrophysics. Its special and confluent forms take names as Mathieu, Lamé, and Coulomb spheroidal equations. For these equations whenever a power series solution is written, instead of a two-way recursion relation between the coefficients in the series, we find one between three or four different ones. An integral transform solution using simpler functions also is not obtainable. The use of this equation in physics and mathematical literature exploded in the later years, more than doubling the number of papers with these solutions in the last decade, compared to time period since this equation was introduced in 1889 up to 2008. We use SCI data to conclude this statement, which is not precise, but in the correct ballpark. Here this equation will be introduced and examples for its use, especially in general relativity literature, will be given.
      PubDate: Thu, 19 Jul 2018 07:12:31 +000
       
  • Dirac Equation in the Presence of Hartmann and Ring-Shaped Oscillator
           Potentials

    • Abstract: The importance of the energy spectrum of bound states and their restrictions in quantum mechanics due to the different methods have been used for calculating and determining the limit of them. Comparison of Schrödinger-like equation obtained by Dirac equation with the nonrelativistic solvable models is the most efficient method. By this technique, the exact relativistic solutions of Dirac equation for Hartmann and Ring-Shaped Oscillator Potentials are accessible, when the scalar potential is equal to the vector potential. Using solvable nonrelativistic quantum mechanics systems as a basic model and considering the physical conditions provide the changes in the restrictions of relativistic parameters based on the nonrelativistic definitions of parameters.
      PubDate: Wed, 18 Jul 2018 00:00:00 +000
       
  • Tunneling Glashow-Weinberg-Salam Model Particles from Black Hole Solutions
           in Rastall Theory

    • Abstract: Using the semiclassical WKB approximation and Hamilton-Jacobi method, we solve an equation of motion for the Glashow-Weinberg-Salam model, which is important for understanding the unified gauge-theory of weak and electromagnetic interactions. We calculate the tunneling rate of the massive charged W-bosons in a background of electromagnetic field to investigate the Hawking temperature of black holes surrounded by perfect fluid in Rastall theory. Then, we study the quantum gravity effects on the generalized Proca equation with generalized uncertainty principle (GUP) on this background. We show that quantum gravity effects leave the remnants on the Hawking temperature and the Hawking radiation becomes nonthermal.
      PubDate: Wed, 18 Jul 2018 00:00:00 +000
       
  • Spectroscopy of Lifshitz Black Hole

    • Abstract: We studied the thermodynamics and spectroscopy of a -dimensional, Lifshitz black hole (LBH). Using Wald’s entropy formula and the Hawking temperature, we derived the quasi-local mass of the LBH. Based on the exact solution to the near-horizon Schrödinger-like equation (SLE) of the massive scalar waves, we computed the quasi-normal modes of the LBH via employing the adiabatic invariant quantity for the LBH. This study shows that the entropy and area spectra of the LBH are equally spaced.
      PubDate: Tue, 17 Jul 2018 00:00:00 +000
       
  • HBT Radii: Comparative Studies on Collision Systems and Beam Energies

    • Abstract: Two-particle Hanbury-Brown-Twiss (HBT) interferometry is an important probe for understanding the space-time structure of particle emission sources in high energy heavy ion collisions. We present the comparative studies of HBT radii in Pb+Pb collisions at = 17.3 GeV with Au+Au collisions at = 19.6 GeV. To further understand this specific energy regime, we also compare the HBT radii for Au+Au collisions at = 19.6 GeV with Cu+Cu collisions at = 22.4 GeV. We have found interesting similarity in the ratio with across the collision systems while comparing the data for this specific energy zone which is interesting as it acts as a bridge from SPS energy regime to the RHIC energy domain.
      PubDate: Sun, 15 Jul 2018 08:15:19 +000
       
  • Portal Dark Matter in the Minimal Model

    • Abstract: We consider a dark matter scenario in the context of the minimal extension of the Standard Model (SM) with a (baryon number minus lepton number) gauge symmetry, where three right-handed neutrinos with a charge and a Higgs field with a charge are introduced to make the model anomaly-free and to break the gauge symmetry, respectively. The gauge symmetry breaking generates Majorana masses for the right-handed neutrinos. We introduce a symmetry to the model and assign an odd parity only for one right-handed neutrino, and hence the -odd right-handed neutrino is stable and the unique dark matter candidate in the model. The so-called minimal seesaw works with the other two right-handed neutrinos and reproduces the current neutrino oscillation data. We consider the case that the dark matter particle communicates with the SM particles through the gauge boson ( boson) and obtain a lower bound on the gauge coupling () as a function of the boson mass () from the observed dark matter relic density. On the other hand, we interpret the recent LHC Run-2 results on the search for a boson resonance to an upper bound on as a function of . These two constraints are complementary for narrowing down an allowed parameter region for this “ portal” dark matter scenario, leading to a lower mass bound of TeV.
      PubDate: Sun, 15 Jul 2018 00:00:00 +000
       
  • Heavy-Light Mesons in the Nonrelativistic Quark Model Using Laplace
           Transformation Method

    • Abstract: An analytic solution of the N-dimensional radial Schrödinger equation with the combination of vector and scalar potentials via the Laplace transformation method (LTM) is derived. The current potential is extended to encompass the spin hyperfine, spin-orbit, and tensor interactions. The energy eigenvalues and the corresponding eigenfunctions have been obtained in the N-dimensional space. The present results are employed to study the different properties of the heavy-light mesons (HLM). The masses of the scalar, vector, pseudoscalar, and pseudovector for B, Bs, D, and Ds mesons have been calculated in the three-dimensional space. The effect of the dimensional number space is discussed on the masses of the HLM. We observed that the meson mass increases with increasing dimensional space. The decay constants of the pseudoscalar and vector mesons have been computed. In addition, the leptonic decay widths and branching ratio for the B+, D+, and mesons have been studied. Therefore, the used method with the current potential gives good results which are in good agreement with experimental data and are improved in comparison with recent theoretical studies.
      PubDate: Thu, 12 Jul 2018 09:12:35 +000
       
  • Bottomonium Suppression in Nucleus-Nucleus Collisions Using Effective
           Fugacity Quasi-Particle Model

    • Abstract: We have studied the equation of state and dissociation temperature of bottomonium state by correcting the full Cornell potential in isotropic medium by employing the effective fugacity quasi-particle Debye mass. We had also calculated the bottomonium suppression in an expanding, dissipative strongly interacting QGP medium produced in relativistic heavy-ion collisions. Finally we compared our results with experimental data from RHIC 200GeV/nucleon Au-Au collisions, LHC 2.76 TeV/nucleon Pb-Pb, and LHC 5.02 TeV/nucleon Pb-Pb collisions as a function of number of participants.
      PubDate: Thu, 12 Jul 2018 00:00:00 +000
       
  • The Discreet Charm of Higgsino Dark Matter: A Pocket Review

    • Abstract: We give a brief review of the current constraints and prospects for detection of higgsino dark matter in low-scale supersymmetry. In the first part we argue, after performing a survey of all potential dark matter particles in the MSSM, that the (nearly) pure higgsino is the only candidate emerging virtually unscathed from the wealth of observational data of recent years. In doing so by virtue of its gauge quantum numbers and electroweak symmetry breaking only, it maintains at the same time a relatively high degree of model-independence. In the second part we properly review the prospects for detection of a higgsino-like neutralino in direct underground dark matter searches, collider searches, and indirect astrophysical signals. We provide estimates for the typical scale of the superpartners and fine tuning in the context of traditional scenarios where the breaking of supersymmetry is mediated at about the scale of Grand Unification and where strong expectations for a timely detection of higgsinos in underground detectors are closely related to the measured mass of the Higgs boson at the LHC.
      PubDate: Wed, 11 Jul 2018 08:03:37 +000
       
  • New Possibilities of Hybrid Texture of Neutrino Mass Matrix

    • Abstract: We investigate the novel possibilities of hybrid textures comprising a vanishing minor (or element) and two equal elements (or cofactors) in light neutrino mass matrix . Such type of texture structures leads to sixty phenomenological cases each, out of which only fifty-six are viable with texture containing a vanishing minor and an equality between the elements in , while fifty are found to be viable with texture containing a vanishing element and an equality of cofactors in under the current experimental test at 3 confidence level. Detailed numerical analysis of all the possible cases has been presented.
      PubDate: Wed, 11 Jul 2018 00:00:00 +000
       
  • Bianchi Type-I Dark Energy Cosmology with Power-Law Relation in
           Brans-Dicke Theory of Gravitation

    • Abstract: We have studied the interacting and non-interacting dark energy and dark matter in the spatially homogenous and anisotropic Bianchi type-I model in the Brans-Dicke theory of gravitation. The field equations have been solved (i) by using power-law relation and (ii) by assuming scale factor in terms of redshift. Here we have considered two cases of an interacting and non-interacting dark energy scenario and obtained general results. It has been found that for suitable choice of interaction between dark energy and dark matter we can avoid the coincidence problem which appears in the model. Some physical aspects and stability of the models are discussed in detail. The statefinder diagnostic pair, i.e., , is adopted to differentiate our dark energy models.
      PubDate: Mon, 09 Jul 2018 00:00:00 +000
       
  • Deep Learning the Effects of Photon Sensors on the Event Reconstruction
           Performance in an Antineutrino Detector

    • Abstract: We provide a fast approach incorporating the usage of deep learning for studying the effects of the number of photon sensors in an antineutrino detector on the event reconstruction performance therein. This work is a first attempt to harness the power of deep learning for detector designing and upgrade planning. Using the Daya Bay detector as a case study and the vertex reconstruction performance as the objective for the deep neural network, we find that the photomultiplier tubes (PMTs) at Daya Bay have different relative importance to the vertex reconstruction. More importantly, the vertex position resolutions for the Daya Bay detector follow approximately a multiexponential relationship with respect to the number of PMTs and, hence, the coverage. This could also assist in deciding on the merits of installing additional PMTs for future detector plans. The approach could easily be used with other objectives in place of vertex reconstruction.
      PubDate: Mon, 09 Jul 2018 00:00:00 +000
       
  • Statistical Physics of the Inflaton Decaying in an Inhomogeneous Random
           Environment

    • Abstract: We derive a stochastic wave equation for an inflaton in an environment of an infinite number of fields. We study solutions of the linearized stochastic evolution equation in an expanding universe. The Fokker-Planck equation for the inflaton probability distribution is derived. The relative entropy (free energy) of the stochastic wave is defined. The second law of thermodynamics for the diffusive system is obtained. Gaussian probability distributions are studied in detail.
      PubDate: Mon, 09 Jul 2018 00:00:00 +000
       
  • Interesting Examples of Violation of the Classical Equivalence Principle
           but Not of the Weak One

    • Abstract: The equivalence principle (EP) and Schiff’s conjecture are discussed en passant, and the connection between the EP and quantum mechanics is then briefly analyzed. Two semiclassical violations of the classical equivalence principle (CEP) but not of the weak one (WEP), i.e., Greenberger gravitational Bohr atom and the tree-level scattering of different quantum particles by an external weak higher-order gravitational field, are thoroughly investigated afterwards. Next, two quantum examples of systems that agree with the WEP but not with the CEP, namely, COW experiment and free fall in a constant gravitational field of a massive object described by its wave-function , are discussed in detail. Keeping in mind that, among the four examples focused on in this work only COW experiment is based on an experimental test, some important details related to it are presented as well.
      PubDate: Sun, 08 Jul 2018 00:00:00 +000
       
  • Cosmologies with Scalar Fields from Higher Dimensions Applied to Bianchi
           Type Model: Classical and Quantum Solutions

    • Abstract: We construct an effective four-dimensional model by compactifying a ten-dimensional theory of gravity coupled with a real scalar dilaton field on a time-dependent torus. The corresponding action in four dimensions is similar to the action of K-essence theories. This approach is applied to anisotropic cosmological Bianchi type model for which we study the classical coupling of the anisotropic scale factors with the two real scalar moduli produced by the compactification process. The classical Einstein field equations give us a hidden symmetry, corresponding to the equality between two radii B=C, which permits us to solve exactly the equations of motion. One relation between the scale factors (A,C) via the solutions is found. With this hidden symmetry, then we solve the FRW model, finding that the scale factor goes to B radii. Also the corresponding Wheeler-DeWitt (WDW) equation in the context of Standard Quantum Cosmology is solved, building a wavepacket when the scalar fields have a hyperbolic behavior, obtaining some qualitative results when we analyze the projection plane to the wall formed by the probability density. Bohm’s formalism for this cosmological model is revisited too.
      PubDate: Sun, 08 Jul 2018 00:00:00 +000
       
  • Expansions of the Solutions of the General Heun Equation Governed by
           Two-Term Recurrence Relations for Coefficients

    • Abstract: We examine the expansions of the solutions of the general Heun equation in terms of the Gauss hypergeometric functions. We present several expansions using functions, the forms of which differ from those applied before. In general, the coefficients of the expansions obey three-term recurrence relations. However, there exist certain choices of the parameters for which the recurrence relations become two-term. The coefficients of the expansions are then explicitly expressed in terms of the gamma functions. Discussing the termination of the presented series, we show that the finite-sum solutions of the general Heun equation in terms of generally irreducible hypergeometric functions have a representation through a single generalized hypergeometric function. Consequently, the power-series expansion of the Heun function for any such case is governed by a two-term recurrence relation.
      PubDate: Wed, 04 Jul 2018 00:00:00 +000
       
 
 
JournalTOCs
School of Mathematical and Computer Sciences
Heriot-Watt University
Edinburgh, EH14 4AS, UK
Email: journaltocs@hw.ac.uk
Tel: +00 44 (0)131 4513762
Fax: +00 44 (0)131 4513327
 
About JournalTOCs
API
Help
News (blog, publications)
JournalTOCs on Twitter   JournalTOCs on Facebook

JournalTOCs © 2009-