Subjects -> PHYSICS (Total: 857 journals)
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PHYSICS (625 journals)                  1 2 3 4 | Last

Showing 1 - 200 of 741 Journals sorted alphabetically
Acta Acustica     Open Access   (Followers: 4)
Acta Mechanica     Hybrid Journal   (Followers: 22)
Acta Scientifica Naturalis     Open Access   (Followers: 2)
Advanced Composite Materials     Hybrid Journal   (Followers: 75)
Advanced Electronic Materials     Hybrid Journal   (Followers: 7)
Advanced Functional Materials     Hybrid Journal   (Followers: 71)
Advanced Materials     Hybrid Journal   (Followers: 254)
Advanced Quantum Technologies     Hybrid Journal   (Followers: 3)
Advanced Science Focus     Free   (Followers: 6)
Advanced Structural and Chemical Imaging     Open Access   (Followers: 2)
Advanced Theory and Simulations     Hybrid Journal   (Followers: 2)
Advances in Clinical Radiology     Full-text available via subscription   (Followers: 4)
Advances in Condensed Matter Physics     Open Access   (Followers: 5)
Advances in Geophysics     Full-text available via subscription   (Followers: 7)
Advances in High Energy Physics     Open Access   (Followers: 23)
Advances in Imaging and Electron Physics     Full-text available via subscription   (Followers: 4)
Advances in Materials Physics and Chemistry     Open Access   (Followers: 33)
Advances in Natural Sciences : Nanoscience and Nanotechnology     Open Access   (Followers: 28)
Advances in OptoElectronics     Open Access   (Followers: 6)
Advances In Physics     Hybrid Journal   (Followers: 29)
Advances in Physics : X     Open Access   (Followers: 4)
Advances in Physics Theories and Applications     Open Access   (Followers: 12)
Advances in Remote Sensing     Open Access   (Followers: 59)
Aggregate     Open Access  
AIP Advances     Open Access   (Followers: 7)
AIP Conference Proceedings     Full-text available via subscription   (Followers: 2)
American Journal of Condensed Matter Physics     Open Access   (Followers: 7)
American Journal of Signal Processing     Open Access   (Followers: 14)
Anales (Asociación Física Argentina)     Open Access  
Analysis and Mathematical Physics     Hybrid Journal   (Followers: 9)
Annalen der Physik     Hybrid Journal   (Followers: 5)
Annales Geophysicae (ANGEO)     Open Access   (Followers: 21)
Annales Henri Poincaré     Hybrid Journal   (Followers: 2)
Annals of Nuclear Medicine     Hybrid Journal   (Followers: 6)
Annals of Physics     Hybrid Journal   (Followers: 7)
Annals of West University of Timisoara - Physics     Open Access   (Followers: 1)
Annual Reports on NMR Spectroscopy     Full-text available via subscription   (Followers: 4)
Annual Review of Analytical Chemistry     Full-text available via subscription   (Followers: 12)
Annual Review of Condensed Matter Physics     Full-text available via subscription   (Followers: 3)
Annual Review of Materials Research     Full-text available via subscription   (Followers: 8)
APL Materials     Open Access   (Followers: 12)
Applied Composite Materials     Hybrid Journal   (Followers: 54)
Applied Mathematics and Physics     Open Access   (Followers: 2)
Applied Physics A     Hybrid Journal   (Followers: 15)
Applied Physics Frontier     Open Access   (Followers: 2)
Applied Physics Letters     Hybrid Journal   (Followers: 44)
Applied Physics Research     Open Access   (Followers: 5)
Applied Physics Reviews     Hybrid Journal   (Followers: 11)
Applied Radiation and Isotopes     Hybrid Journal   (Followers: 4)
Applied Spectroscopy     Full-text available via subscription   (Followers: 24)
Applied Spectroscopy Reviews     Hybrid Journal   (Followers: 4)
Archive for Rational Mechanics and Analysis     Hybrid Journal   (Followers: 1)
Asia Pacific Physics Newsletter     Hybrid Journal   (Followers: 1)
Asian Journal of Physical and Chemical Sciences     Open Access   (Followers: 2)
ASTRA Proceedings     Open Access   (Followers: 3)
Astronomy & Geophysics     Hybrid Journal   (Followers: 49)
Astronomy and Astrophysics Review     Hybrid Journal   (Followers: 39)
Atoms     Open Access   (Followers: 1)
Attention, Perception & Psychophysics     Full-text available via subscription   (Followers: 15)
Axioms     Open Access   (Followers: 1)
Bangladesh Journal of Medical Physics     Open Access  
Bauphysik     Hybrid Journal   (Followers: 1)
Biomaterials     Hybrid Journal   (Followers: 55)
Biomedical Imaging and Intervention Journal     Open Access   (Followers: 5)
Biophysical Reviews     Hybrid Journal   (Followers: 2)
Biophysical Reviews and Letters     Hybrid Journal   (Followers: 5)
BJR|Open     Open Access  
Boson Journal of Modern Physics     Open Access   (Followers: 9)
Brazilian Journal of Physics     Hybrid Journal  
Bulletin of Materials Science     Open Access   (Followers: 43)
Bulletin of Taras Shevchenko National University of Kyiv. Series: Physics and Mathematics     Open Access  
Bulletin of the Atomic Scientists     Hybrid Journal   (Followers: 7)
Bulletin of the Lebedev Physics Institute     Hybrid Journal  
Bulletin of the Russian Academy of Sciences: Physics     Hybrid Journal   (Followers: 1)
Caderno Brasileiro de Ensino de Física     Open Access  
Canadian Journal of Physics     Hybrid Journal   (Followers: 11)
Cell Reports Physical Science     Open Access  
Cells     Open Access   (Followers: 2)
CERN courier. International journal of high energy physics     Free   (Followers: 8)
Chemical Physics Impact     Full-text available via subscription  
ChemPhysMater     Full-text available via subscription  
Chinese Journal of Chemical Physics     Hybrid Journal   (Followers: 1)
Chinese Journal of Physics     Hybrid Journal   (Followers: 1)
Ciencia     Open Access  
Clinical Spectroscopy     Open Access  
Cogent Physics     Open Access  
Colloid Journal     Hybrid Journal   (Followers: 2)
Communications in Mathematical Physics     Hybrid Journal   (Followers: 2)
Communications in Numerical Methods in Engineering     Hybrid Journal   (Followers: 2)
Communications Materials     Open Access  
Communications Physics     Open Access  
Complex Analysis and its Synergies     Open Access   (Followers: 2)
Composites Part A : Applied Science and Manufacturing     Hybrid Journal   (Followers: 173)
Composites Part B : Engineering     Hybrid Journal   (Followers: 219)
Composites Part C : Open Access     Open Access   (Followers: 2)
Computational Astrophysics and Cosmology     Open Access   (Followers: 6)
Computational Condensed Matter     Open Access   (Followers: 1)
Computational Materials Science     Hybrid Journal   (Followers: 25)
Computational Mathematics and Mathematical Physics     Hybrid Journal   (Followers: 5)
Computational Particle Mechanics     Hybrid Journal   (Followers: 1)
Computer Physics Communications     Hybrid Journal   (Followers: 9)
Condensed Matter     Open Access   (Followers: 2)
Contemporary Physics     Hybrid Journal   (Followers: 26)
Continuum Mechanics and Thermodynamics     Hybrid Journal   (Followers: 8)
Contributions to Plasma Physics     Hybrid Journal   (Followers: 3)
Cryogenics     Hybrid Journal   (Followers: 60)
Current Applied Physics     Full-text available via subscription   (Followers: 4)
Current Science     Open Access   (Followers: 115)
Diagnostic and Interventional Imaging     Full-text available via subscription  
Diamond and Related Materials     Hybrid Journal   (Followers: 10)
Discrete and Continuous Models and Applied Computational Science     Open Access  
Doklady Physics     Hybrid Journal   (Followers: 1)
e-Boletim da Física     Open Access  
East European Journal of Physics     Open Access   (Followers: 1)
Edufisika : Jurnal Pendidikan Fisika     Open Access  
EDUSAINS     Open Access  
Egyptian Journal of Remote Sensing and Space Science     Open Access   (Followers: 25)
EJNMMI Physics     Open Access  
Emergent Scientist     Open Access  
Engineering Failure Analysis     Hybrid Journal   (Followers: 68)
Engineering Fracture Mechanics     Hybrid Journal   (Followers: 24)
Environmental Fluid Mechanics     Hybrid Journal   (Followers: 11)
EPJ Quantum Technology     Open Access   (Followers: 2)
EPJ Techniques and Instrumentation     Open Access  
EPJ Web of Conferences     Open Access   (Followers: 1)
EUREKA : Physics and Engineering     Open Access  
European Physical Journal - Applied Physics     Full-text available via subscription   (Followers: 19)
European Physical Journal C     Hybrid Journal   (Followers: 2)
Europhysics News     Open Access  
Experimental and Computational Multiphase Flow     Hybrid Journal  
Experimental Mechanics     Hybrid Journal   (Followers: 21)
Experimental Techniques     Hybrid Journal   (Followers: 51)
Exploration Geophysics     Hybrid Journal   (Followers: 4)
Few-Body Systems     Hybrid Journal   (Followers: 1)
Fire and Materials     Hybrid Journal   (Followers: 5)
FirePhysChem     Open Access  
Flexible Services and Manufacturing Journal     Hybrid Journal   (Followers: 2)
Fluctuation and Noise Letters     Hybrid Journal  
Fluid Dynamics     Hybrid Journal   (Followers: 27)
Fortschritte der Physik/Progress of Physics     Hybrid Journal  
Frontiers in Nanotechnology     Open Access   (Followers: 1)
Frontiers in Physics     Open Access   (Followers: 6)
Frontiers of Materials Science     Hybrid Journal   (Followers: 5)
Frontiers of Physics     Hybrid Journal   (Followers: 2)
Fusion Engineering and Design     Hybrid Journal   (Followers: 6)
Geochemistry, Geophysics, Geosystems     Full-text available via subscription   (Followers: 35)
Geografiska Annaler, Series A : Physical Geography     Hybrid Journal   (Followers: 4)
Geophysical Research Letters     Full-text available via subscription   (Followers: 160)
Giant     Open Access  
Glass Physics and Chemistry     Hybrid Journal   (Followers: 1)
Granular Matter     Hybrid Journal  
Graphs and Combinatorics     Hybrid Journal   (Followers: 4)
Gravitation and Cosmology     Hybrid Journal   (Followers: 6)
Heat Transfer - Asian Research     Hybrid Journal   (Followers: 10)
High Energy Density Physics     Hybrid Journal   (Followers: 3)
High Pressure Research: An International Journal     Hybrid Journal   (Followers: 3)
Himalayan Physics     Open Access  
IEEE Embedded Systems Letters     Hybrid Journal   (Followers: 60)
IEEE Journal of Quantum Electronics     Hybrid Journal   (Followers: 19)
IEEE Journal on Multiscale and Multiphysics Computational Techniques     Hybrid Journal  
IEEE Magnetics Letters     Hybrid Journal   (Followers: 7)
IEEE Nanotechnology Magazine     Hybrid Journal   (Followers: 45)
IEEE Reviews in Biomedical Engineering     Hybrid Journal   (Followers: 19)
IEEE Signal Processing Magazine     Full-text available via subscription   (Followers: 98)
IEEE Solid-State Circuits Magazine     Hybrid Journal   (Followers: 11)
IEEE Transactions on Autonomous Mental Development     Hybrid Journal   (Followers: 8)
IEEE Transactions on Biomedical Engineering     Hybrid Journal   (Followers: 35)
IEEE Transactions on Broadcasting     Hybrid Journal   (Followers: 11)
IEEE Transactions on Geoscience and Remote Sensing     Hybrid Journal   (Followers: 174)
IEEE Transactions on Haptics     Hybrid Journal   (Followers: 4)
IEEE Transactions on Industrial Electronics     Hybrid Journal   (Followers: 85)
IEEE Transactions on Industry Applications     Hybrid Journal   (Followers: 57)
IEEE Transactions on Learning Technologies     Full-text available via subscription   (Followers: 12)
IEEE Transactions on Quantum Engineering     Open Access   (Followers: 3)
IEEE Transactions on Services Computing     Hybrid Journal   (Followers: 5)
IEEE Transactions on Software Engineering     Hybrid Journal   (Followers: 84)
IEEE Women in Engineering Magazine     Hybrid Journal   (Followers: 11)
IEEE/OSA Journal of Optical Communications and Networking     Hybrid Journal   (Followers: 19)
IET Optoelectronics     Open Access   (Followers: 2)
Il Colle di Galileo     Open Access  
Image Analysis & Stereology     Open Access   (Followers: 1)
Imaging Science Journal     Hybrid Journal   (Followers: 3)
ImmunoInformatics     Open Access   (Followers: 1)
Indian Journal of Biochemistry and Biophysics (IJBB)     Open Access   (Followers: 3)
Indian Journal of Physics     Hybrid Journal   (Followers: 18)
Indian Journal of Pure & Applied Physics (IJPAP)     Open Access   (Followers: 36)
Indian Journal of Radio & Space Physics (IJRSP)     Open Access   (Followers: 49)
Infinite Dimensional Analysis, Quantum Probability and Related Topics     Hybrid Journal   (Followers: 1)
InfraMatics     Open Access  
Infrared Physics & Technology     Hybrid Journal   (Followers: 11)
Intelligent Transportation Systems Magazine, IEEE     Full-text available via subscription   (Followers: 12)
Intermetallics     Hybrid Journal   (Followers: 21)
International Applied Mechanics     Hybrid Journal   (Followers: 5)
International Heat Treatment and Surface Engineering     Hybrid Journal   (Followers: 5)
International Journal for Computational Methods in Engineering Science and Mechanics     Hybrid Journal   (Followers: 13)
International Journal for Ion Mobility Spectrometry     Hybrid Journal   (Followers: 1)
International Journal for Simulation and Multidisciplinary Design Optimization     Open Access   (Followers: 5)
International Journal of Abrasive Technology     Hybrid Journal   (Followers: 2)
International Journal of Aeroacoustics     Hybrid Journal   (Followers: 37)
International Journal of Applied Electronics in Physics & Robotics     Open Access   (Followers: 3)

        1 2 3 4 | Last

Similar Journals
Journal Cover
Few-Body Systems
Journal Prestige (SJR): 0.46
Citation Impact (citeScore): 1
Number of Followers: 1  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 1432-5411 - ISSN (Online) 0177-7963
Published by Springer-Verlag Homepage  [2469 journals]
  • Motion Around Out-of-Plane Equilibrium Points in the Frame of Restricted
           Six-Body Problem Under Radiation Pressure

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      Abstract: The goal of the present manuscript is to study the existence of out-of-plane equilibrium points and their stability in the photogravitational restricted six-body problem. It is found that there exist two out-of-plane equilibria under the restrictions \(-\frac{4\mu }{1-4\mu }<q<0\) and \(0< \mu < 0.25\) , where q and \(\mu \) are the radiation factor and mass parameter, respectively. It is also observed that the out-of-plane equilibria are linearly unstable in the above mentioned interval. With the help of Poincaré section, we have examined the orbits such as consistent, periodic, quasi-periodic, disordered, or stochastic.
      PubDate: 2022-05-13
       
  • Two-Particle System with Harmonic Oscillator Potential in Non-commutative
           Phase Space

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      Abstract: In this paper, we investigate the influence of non-commutativity of both coordinates and momenta on the motion of a two-particle system in the presence of harmonic oscillator potential in plane. We obtain the equations of motion for the center of mass and the reduced mass and show that how they are dependent to the non-commutative parameters. We also show that the non-commutativity can be interpreted as an external force to system. In the limit of commutative phase space ( \(\theta \rightarrow 0,\eta \rightarrow 0)\) , the results are also agreement with the results of ordinary phase space.
      PubDate: 2022-05-07
       
  • The Current Status of Electron Ion Collider in China

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      Abstract: Abstract Measuring the internal structures of the nucleon and the nuclear matter is one of the hot scientific topics in the filed of high-energy nuclear physics, which can answer the fundamental questions about the emergent properties of the nucleon and the nuclear force that binds the nucleons together forming an atomic nucleus. The high-energy lepton-proton/nucleus scattering is a well-established and clear way to probe the inner structure of these subatomic particles, which attracts a lot of interests from the nuclear physicists worldwide. To pursue such scientific goals, an Electron-ion collider in China (EicC) has been proposed as a future high-energy nuclear physics project in China. EicC will focus on the sea quarks in the nucleon, which well compliments the projects of electron-ion collider in US and JLab 12 GeV upgrade. In this article, the plans and conceptual designs of the accelerator and the detectors of EicC are briefly discussed. We illustrate some highlights of the experiments that will be performed at EicC.
      PubDate: 2022-05-04
       
  • Celebrating 30 Years of Steven Weinberg’s Paper Nuclear Forces from
           Chiral Lagrangians - an Introduction to the Special Issue

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      PubDate: 2022-05-03
       
  • Preface: Yamada Conference LXXII: The 8th Asia-Pacific Conference on
           Few-Body Problems in Physics (APFB2020)

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      PubDate: 2022-05-03
       
  • Symmetries of the Nucleon–Nucleon S-Matrix and Effective Field
           Theory Expansions

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      Abstract: Abstract The s-wave nucleon–nucleon scattering matrix (S-matrix) exhibits UV/IR symmetries which are hidden in the effective field theory (EFT) action and scattering amplitudes, and which explain some generic features of the phase shifts. These symmetries offer clarifying interpretations of existing pionless EFT expansions, and suggest starting points for novel expansions. The leading-order (LO) S-matrix obtained in the pionless EFT with scattering lengths treated exactly is shown to have a UV/IR symmetry which leaves the sum of s-wave phase shifts invariant. A new scheme, which treats effective range corrections exactly, and which possesses a distinct UV/IR symmetry at LO, is developed up to NLO (next-to-LO) and compared with data.
      PubDate: 2022-04-30
       
  • What Can Possibly Go Wrong'

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      Abstract: Abstract A lot.
      PubDate: 2022-04-29
       
  • Progress of Underground Nuclear Astrophysics Experiment JUNA in China

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      Abstract: Abstract Underground Nuclear Astrophysics Experiment in China (JUNA) takes the advantage of the ultra-low background in Jinping underground lab. High current mA level 400 KV accelerator with an ECR source, BGO and neutron detectors were commissioned. JUNA studies directly a number of nuclear reactions important to hydrostatic stellar evolution at their relevant stellar energies. In the first quarter of 2021, JUNA performed the direct measurements of \({}^{25}\mathrm{Mg}(\mathrm{p},\gamma ){}^{26}\mathrm{Al}, {}^{19}\mathrm{F}(\mathrm{p}, \alpha ){}^{16}\mathrm{O}, {}^{13}\mathrm{C}(\alpha ,\mathrm{n}){}^{16}\mathrm{O}\) and \(^{12}\) C( \(\alpha ,\gamma \) ) \(^{16}\) O near the Gamow window. The experimental results reflect the potential of JUNA with higher statistics, precision and sensitivity of the data. The preliminary results of JUNA experiment and future plan are given.
      PubDate: 2022-04-13
       
  • Emergent Hadron Mass in Strong Dynamics

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      Abstract: Abstract Emergent Hadron Mass (EHM) is a mechanism capable of explaining both the unnaturally small (pion) and large (proton) masses of hadrons and if not the origin of confinement, then intimately connected with it. Even though the modern formulation of EHM has only recently been completed, it is rapidly becoming a fundamental focus for modern and future experimental efforts aimed at understanding the strong force within the Standard Model. Using Dyson–Schwinger equations for the gluon, ghost and quark propagators, I will introduce the main EHM concepts and illustrate how far this framework can take us in understanding strong interaction phenomenology.
      PubDate: 2022-04-12
       
  • Effect of Earth’s Equatorial Ellipticity on the Resonant Curve and Phase
           Portrait of Geo-centric Satellite Under the Gravitational Effect of the
           Earth–Moon–Sun System by Using Unperturbed Solution

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      Abstract: Abstract In this article, we investigated the resonant curves of geo-centric satellite due to the rate of change in earth’s equatorial ellipticity parameter \((\dot{\gamma })\) , moon’s angular velocity around the earth \((\dot{\vartheta })\) , and angular velocity of bary-center \((\dot{\Theta })\) around the sun. We expressed the equations of the motion of the satellite in a spherical coordinate system using the earth’s potential. The system of equations are reduced into a second-order ordinary differential equation and determined its solution. From the solution, it is noted that resonance appears due to the frequencies \(\dot{\delta _{s0 }}\) , \(\dot{\gamma }\) , \(\dot{\Theta _0}\) and \(\dot{\vartheta _0}\) at ten resonant points \({\dot{\delta }_{s0}}={2\dot{\gamma }}\) , \({\dot{\delta }_{s0}}={\dot{\gamma }}\) , \({\dot{\delta }_{s0}}={2\dot{\Theta }_0}\) , \({\dot{\delta }_{s0}}={\dot{\Theta }_0}\) , \({\dot{\delta }_{s0}}=\frac{{2 \dot{\Theta }_0}}{3}\) , \({\dot{\delta }_{s0}}=\frac{\dot{\Theta }_0}{2}\) , \({\dot{\delta }_{s0}={2\dot{\vartheta _0}}}\) , \({\dot{\delta }_{s0}={\dot{\vartheta _0}}}\) , \({\dot{\delta }_{s0}=\frac{{2\dot{\vartheta _0}}}{3}}\) , and \({\dot{\delta }_{s0}=\frac{{dot{\vartheta _0}}}{2}}\) , where \({\dot{\delta }_{s0}}\) , \({\dot{\Theta }_0}\) and \({\dot{\vartheta _0}}\) are the steady-state value of \({\dot{\delta }_{s}}\) , \({\dot{\Theta }}\) and \({\dot{\vartheta }}\) respectively. We have drawn the resonant curves corresponding to the resonant points. From the graph, it is observed that the effect of earth’s equatorial ellipticity parameter on the resonant curves are very small. Also, we have shown the effect of eccentricity (e) and semi-major axes (a) on the oscillatory amplitudes \((A_i)\) , where \(i=1,2,3\ldots 21\) . Finally, we have analyzed the phase portrait by using Poincaré section method when the system is free from forces.
      PubDate: 2022-04-04
       
  • Improvement of the Envelope Theory for Systems with Different Particles

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      Abstract: Abstract The envelope theory is a method to compute approximate eigensolutions of quantum N-body Hamiltonians with a quite general structure in D dimensions. The advantages of the method are that it is easy to implement and that N is treated as any other parameters of the Hamiltonian, allowing the computation for systems of all sizes. If solutions are reliable, they are generally not very accurate. In the case of systems with identical particles for \(D \ge 2\) , it is possible to improve the precision of the eigenvalues by combining the envelope theory with a generalisation to N-body of the dominantly orbital state method. It is shown that a similar improvement can be achieved in the case of systems composed of identical particles plus a different one. The quality of the new procedure is tested with different systems.
      PubDate: 2022-03-30
       
  • Connecting the Dirac Equation in Flat and Curved Spacetimes via Unitary
           Transformation

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      Abstract: Abstract In this work, the extension of the symmetrically spherical Dirac equation in the context of supersymmetric quantum mechanics in curved spacetime is investigated in presence of vector and tensor potentials given by V(r) and A(r), respectively, with the line element given by \(ds^2 = (1+\alpha ^2 U(r))^2(dt^2-dr^2) - r^2d\theta ^2 - r^2\sin ^2\theta d\phi ^2\) , where U(r) is a scalar potential and \(\alpha \) is fine structure constant. Through a unitary transformation given by \(U^{'}(\eta ) = \exp (i\alpha \eta \sigma ^2/2)\) we decouple the radial wave functions and obtain an equation analogous to Schrödinger equation in the context of supersymmetric quantum mechanics when \( U(r) = -\epsilon V(r) \) , so we can write the potential V(r) , U(r) and A(r) in terms of the superpotential W(r) . With this, the class of shape-invariant potentials can be exact solved in curved spacetime with the coupling considered. For the particular case \( \eta = 0 \) , we recover the problem in flat spacetime, so the unitary operator \( U^{'}(\eta ) \) connects the systems with shape-invariant potentials in flat and curved spacetimes. As applications, two systems were analyzed: the harmonic oscillator and the Coulomb potential.
      PubDate: 2022-03-26
       
  • Lorentz Symmetry Breaking Effects Around a Cylindrical Cavity

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      Abstract: Abstract From a model that goes beyond the Standard Model, we study Lorentz symmetry breaking effects around a cylindrical cavity at a low-energy regime. We consider a background of the Lorentz symmetry violation determined by a fixed vector field, then, we study the influence of a cut-off point on a harmonic potential induced by the effects of the Lorentz symmetry violation. We show that the cut-off point modifies the spectrum of energy of the harmonic-type potential. One aspect observed is the infinity degeneracy of the energy levels. Besides, we discuss a lower bound for the Lorentz symmetry violation parameters.
      PubDate: 2022-03-25
       
  • One-Neutron Removal Cross Sections for $$^{16}$$ 16 N Isomeric State

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      Abstract: Abstract It is well known that the enhancement of halo neutron removal cross sections in neutron halo nuclei. This is one of the evidence for the neutron halo structure. Because the valence neutron of the isomeric state in \(^{16}\) N is considered to be mainly occupying in the s-orbital, we studied the nuclear structure of \(^{16}\) N as a candidate for neutron halo nucleus. In this study, we measured one-neutron removal cross sections \(\sigma _{-1n}\) using secondary beams of \(^{16}\) N with a mixture of ground and isomeric states. We used two types of primary beams, \(^{15}\) N and \(^{18}\) O, to produce \(^{16}\) N beams with different isomeric ratios (8.7, 24.2a \(^{16}\) N beam with a large isomeric ratio is large compared to that obtained with another beam with a small isomeric state. This result suggests that the \(^{16}\) N isomeric state is considered to have a neutron-halo-like structure.
      PubDate: 2022-03-21
       
  • Structure of $$\pmb K\pmb K\pmb K^{\pmb {bar}}$$ K K K bar – $$K{\pmb
           {\pi }}{\pmb {\pi }}$$ K π π – $$K{\pmb {\pi }}{\pmb {\eta }}$$ K π
           η Three-Body Resonance and Partial Decay Widths of $${\pmb K}(\pmb
           {1460})$$ K ( 1460 )

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      Abstract: Abstract Using the complex-scaling method, we discuss the coupled-channel \(KKK^{bar}\) – \(K\pi \pi \) – \(K\pi \eta \) three-body resonance and determine the resonance pole with KK, \(KK^{bar}\) – \(\pi \pi \) , \(KK^{bar}\) – \(\pi \eta \) and \(K\pi \) two-body potentials describing two-body scattering properties and \(f^0\) and \(a^0\) resonances. It is shown that the three-body resonance can be interpreted as K(1460). To estimate the partial decay widths of this three-body resonance, we calculate the partial-wave components in the resonance wave function and evaluate roughly the partial decay widths in \(K^*\pi \) , \(\varepsilon K\) and \(\rho K\) modes. We find that additional p-wave components are needed to explain the experimental partial decay widths of K(1460).
      PubDate: 2022-03-19
       
  • Residual Cut-Off Dependence and Power Counting: The Deuteron as a Case
           Study

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      Abstract: Abstract Effective field theories (EFTs) require regularization and renormalization to gain predictive power. While regularization is inconsequential from the point of view of the observable predictions of EFT—in a renormalized theory predictions are regulator-independent once the cutoff is removed—the particular details of regulator dependence might provide interesting insights into the inner workings of an EFT. In fact, the analysis of regulator dependence has been frequently suggested as a tool to study the ordering scheme or power counting of EFTs. We show here the quantitative differences betweeen inferred residual cutoff dependence from different regulators, thereby showing that cutoff variations might provide limited information about uncertainties and power counting (at least in practical settings).
      PubDate: 2022-03-15
       
  • Study on the $${\pmb {2}}^{\pmb +}_{\pmb 2}$$ 2 2 + Resonance in $$^{\pmb
           6}$$ 6 He via Analysis of $$^{\pmb 6}$$ 6 He( $${\pmb p}$$ p , $${\pmb
           p'}$$ p ′ ) Reactions

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      Abstract: Abstract \(^6\) He is known as two-neutron halo nuclei and has a Borromean structure in which there is no bound state in the binary subsystems. To explore resonances of unstable nuclei, the (p, \(p'\) ) reaction with the inverse kinematics has been often used. The \(2^{+}_{2}\) state has been investigated via various structural calculations and experimental studies. Unfortunately, the contribution of this state in the energy spectrum does not show a shape structure. Thus, the resonant energy and decay width of the \(2^{+}_{2}\) state have never been clear. To clarify the properties, it is required an accurate analysis of treating not only resonant contributions but also nonresonant contributions in energy spectra. In this study, we investigated the \(2^{+}_{2}\) resonant state via the analysis of \(^6\) He(p, \(p'\) ) reaction by using the continuum-discretized coupled-channels method. To describe the resonant and nonresonant state components, we also applied the complex scaling method to the analysis.
      PubDate: 2022-03-15
       
  • Electromagnetic Transitions in the Spectrum of a Confined Hydrogen Atom

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      Abstract: Abstract Transition probabilities per time unit in the spectrum of the hydrogen atom confined in a spherical cavity are studied with the Dirac equation. The calculations are performed with simple and accurate expansions of the Dirac components provided by the Lagrange-mesh method with small numbers of scaled Jacobi mesh points. The initial and final states as well as intermediate states occurring in two-photon transitions are described with a single Lagrange mesh. With this simplification, accurate matrix elements are easily computed with the Gauss quadrature associated with the Lagrange–Jacobi mesh. One-photon transitions are considered from the \(n = 2\) and 3 levels. Most transition probabilities increase as a negative power of the confinement radius when it becomes small. The two-photon \(2s_{1/2}-1s_{1/2}\) transition stops being the main deexcitation channel of the \(2s_{1/2}\) level when the confinement radius decreases below about 15 atomic units. The \(2p_{1/2}\) and \(2p_{3/2}\) levels come below the \(2s_{1/2}\) level and allow a faster one-photon deexcitation.
      PubDate: 2022-03-14
       
  • Masses, Radii and Regge Trajectories of $$\Sigma _{u}^{-}$$ Σ u -
           State Hybrid Charmonium

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      Abstract: Abstract In this paper, masses, radii and \(E_1\) radiative transitions of \(\Sigma ^-_u\) state hybrid charmonium mesons for radial and orbital excitations are calculated by numerically solving the Schrödinger equation with non-relativistic potential model. Results for calculated masses of \(\Sigma ^-_{u}\) states charmonium hybrid mesons are found to be close to the results obtained through lattice simulations. Calculated masses are used to construct Regge trajectories. It is found that the trajectories are almost linear and parallel.
      PubDate: 2022-03-13
       
  • Hyperon–Proton Scattering Experiment and Recent Progress of Strangeness
           Nuclear Physics at J-PARC

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      Abstract: Abstract High intensity secondary beam in J-PARC enables us to perform strangeness nuclear physics programs in order to investigate the baryon–baryon (BB) interactions between the octet baryons. As one of the experiments at the K1.8 beam line, a high statistics \(\varSigma p\) scattering experiment has been performed. The differential cross sections of the \(\varSigma ^{-}p\) elastic scattering for the momentum region from 470 to 850 MeV/c have been successfully measured with an improved accuracy. The statistical error of 10% level was achieved with a fine angular step of \(d\cos \theta = 0.1\) by identifying the largest statistics of about 4500 \(\varSigma ^{-}p\) elastic scattering events from \(1.72 \times 10^{7}\,\varSigma ^{-}\) particles. The differential cross sections show clear forward peaking structure and the forward and backward ratio is large particularly in the higher momentum regions. The accurate data will impose a strong constraint on the theoretical models of the BB interactions.
      PubDate: 2022-03-12
       
 
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