The Experts below are selected from a list of 216 Experts worldwide ranked by ideXlab platform
Ulugbek Yakhshiev - One of the best experts on this subject based on the ideXlab platform.
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Transverse charge densities in the nucleon in Nuclear Matter
Physics Letters B, 2020Co-Authors: Ulugbek YakhshievAbstract:We investigated the transverse charge densities in the nucleon in Nuclear Matter within the framework of the in-medium modified Skyrme model. The medium modification of the nucleon electromagnetic form factors are first discussed. The results show that the form factors in Nuclear Matter fall off faster than those in free space, as the momentum transfer increases. As a result, the charge radii of the nucleon become larger, as the Nuclear Matter density increases. The transverse charge densities in the nucleon indicate that the size of the nucleon tends to bulge out in Nuclear Matter. This salient feature of the swelling is more clearly observed in the neutron case. When the proton is transversely polarized, the transverse charge densities exhibit the distortion due to the effects of the magnetization.Comment: 8 pages, 20 figure
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Transverse charge densities in the nucleon in Nuclear Matter
Physics Letters B, 2013Co-Authors: Ulugbek YakhshievAbstract:Abstract We investigated the transverse charge densities in the nucleon in Nuclear Matter within the framework of the in-medium modified Skyrme model. The medium modification of the nucleon electromagnetic form factors are first discussed. The results show that the form factors in Nuclear Matter fall off faster than those in free space, as the momentum transfer increases. As a result, the charge radii of the nucleon become larger, as the Nuclear Matter density increases. The transverse charge densities in the nucleon indicate that the size of the nucleon tends to bulge out in Nuclear Matter. This salient feature of the swelling is more clearly observed in the neutron case. When the proton is transversely polarized, the transverse charge densities exhibit the distortion due to the effects of the magnetization.
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Pion–Rho Meson Lagrangian in Nuclear Matter
Few-body Systems, 2013Co-Authors: Ju-hyun Jung, Ulugbek YakhshievAbstract:We present an in-medium modified pion and rho meson Lagrangian which describes the pion, rho meson and the corresponding soliton properties in Nuclear Matter. Within the present approach pion properties in Nuclear Matter is closely related to the low-energy pion-nucleus scattering phenomenology. We discuss the possible modifications of rho meson properties in Nuclear Matter.
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Nucleon Properties in Nuclear Matter
arXiv: Nuclear Theory, 2011Co-Authors: Ulugbek YakhshievAbstract:We present recent studies on the effective mass of the nucleon in infinite and homogeneous Nuclear Matter and its relation to Nuclear Matter properties within the framework of the in‐medium modified Skyrme model. Medium modifications are achieved by introducing optical potential for pion fields and parametrization of the Skyrme parameter in Nuclear medium. The present approach is phenomenologically well justified by pion physics in Nuclear Matter and describe successfully bulk Nuclear Matter properties.
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Is there a crystalline state of Nuclear Matter
Physics Letters B, 2005Co-Authors: Ulugbek Yakhshiev, M.m. MusakhanovAbstract:Abstract A possibility of the crystalline state of Nuclear Matter is discussed in a medium-modified Skyrme model. The interaction energy per nucleon in Nuclear Matter is evaluated by taking into account the medium influence on single nucleon–skyrmion properties and the tensor part of the nucleon–nucleon potential, and by using a variational method of Hartree–Fock type including zero-point quantum fluctuations. It is shown that in this approach the ground state of Nuclear Matter has no crystalline structure due to quantum fluctuations as well as medium modifications of hadron properties.
Hiroyuki Sagawa - One of the best experts on this subject based on the ideXlab platform.
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Neutron skin thickness and Nuclear Matter properties
Physics of Atomic Nuclei, 2007Co-Authors: S. Yoshida, Hiroyuki SagawaAbstract:Linear correlations are found among the isovector Nuclear Matter properties in both the Skyrme-Hartree-Fock (SHF) and the relativistic mean-field (RMF) models. In addition, we found a kind of correlation between the isovector Nuclear Matter properties and the incompressibility in the SHF model. The Skyrme parameters are related analytically to Nuclear Matter properties with the Thomas—Fermi approximation. By using a linear correlation between the neutron skin thickness and the pressure of the neutron Matter in the SHF model, we show that the neutron skin thickness of 208Pb gives crucial information about not only the neutron equation of state but also the isovector Nuclear Matter properties and the parametrization of Skyrme interaction.
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Isovector Nuclear Matter properties and neutron skin thickness
Physical Review C, 2006Co-Authors: S. Yoshida, Hiroyuki SagawaAbstract:Correlations among several Nuclear Matter properties are investigated in the Skyrme Hartree-Fock (SHF) and the relativistic mean field (RMF) models. The Skyrme parameters are related analytically to the isoscalar and isovector Nuclear Matter properties of the Hamiltonian density. Linear correlations are found among the isovector Nuclear Matter properties of the Hamiltonian density in both the SHF and the RMF models. We show analytically a singularity at the incompressibility K{sub c}=306 MeV in correlations between the isovector Nuclear Matter properties and incompressibility with the SHF model, whereas there is no obvious singularity in those correlations with the RMF model. A linear correlation between the neutron skin thickness and the pressure of the neutron Matter is given in terms of the ratio between the neutron and Nuclear Matter densities in the SHF model. We show that the neutron skin thickness gives crucial information about not only the neutron equation of state but also the isovector Nuclear Matter properties and the parametrization of the Skyrme interaction.
S. Yoshida - One of the best experts on this subject based on the ideXlab platform.
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Neutron skin thickness and Nuclear Matter properties
Physics of Atomic Nuclei, 2007Co-Authors: S. Yoshida, Hiroyuki SagawaAbstract:Linear correlations are found among the isovector Nuclear Matter properties in both the Skyrme-Hartree-Fock (SHF) and the relativistic mean-field (RMF) models. In addition, we found a kind of correlation between the isovector Nuclear Matter properties and the incompressibility in the SHF model. The Skyrme parameters are related analytically to Nuclear Matter properties with the Thomas—Fermi approximation. By using a linear correlation between the neutron skin thickness and the pressure of the neutron Matter in the SHF model, we show that the neutron skin thickness of 208Pb gives crucial information about not only the neutron equation of state but also the isovector Nuclear Matter properties and the parametrization of Skyrme interaction.
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Isovector Nuclear Matter properties and neutron skin thickness
Physical Review C, 2006Co-Authors: S. Yoshida, Hiroyuki SagawaAbstract:Correlations among several Nuclear Matter properties are investigated in the Skyrme Hartree-Fock (SHF) and the relativistic mean field (RMF) models. The Skyrme parameters are related analytically to the isoscalar and isovector Nuclear Matter properties of the Hamiltonian density. Linear correlations are found among the isovector Nuclear Matter properties of the Hamiltonian density in both the SHF and the RMF models. We show analytically a singularity at the incompressibility K{sub c}=306 MeV in correlations between the isovector Nuclear Matter properties and incompressibility with the SHF model, whereas there is no obvious singularity in those correlations with the RMF model. A linear correlation between the neutron skin thickness and the pressure of the neutron Matter is given in terms of the ratio between the neutron and Nuclear Matter densities in the SHF model. We show that the neutron skin thickness gives crucial information about not only the neutron equation of state but also the isovector Nuclear Matter properties and the parametrization of the Skyrme interaction.
Dirk H Rischke - One of the best experts on this subject based on the ideXlab platform.
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chiral density wave in Nuclear Matter
Nuclear Physics, 2015Co-Authors: Achim Heinz, Francesco Giacosa, Dirk H RischkeAbstract:Abstract Inspired by recent work on inhomogeneous chiral condensation in cold, dense quark Matter within models featuring quark degrees of freedom, we investigate the chiral density-wave solution in Nuclear Matter at zero temperature and nonvanishing baryon number density in the framework of the so-called extended linear sigma model (eLSM). The eLSM is an effective model for the strong interaction based on the global chiral symmetry of quantum chromodynamics (QCD). It contains scalar, pseudoscalar, vector, and axial-vector mesons as well as baryons. In the latter sector, the nucleon and its chiral partner are introduced as parity doublets in the mirror assignment. The eLSM simultaneously provides a good description of hadrons in vacuum as well as Nuclear Matter ground-state properties. We find that an inhomogeneous phase in the form of a chiral density wave is realized, but only for densities larger than 2.4 ρ 0 , where ρ 0 is the Nuclear Matter ground-state density.
Francesco Giacosa - One of the best experts on this subject based on the ideXlab platform.
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chiral density wave in Nuclear Matter
Nuclear Physics, 2015Co-Authors: Achim Heinz, Francesco Giacosa, Dirk H RischkeAbstract:Abstract Inspired by recent work on inhomogeneous chiral condensation in cold, dense quark Matter within models featuring quark degrees of freedom, we investigate the chiral density-wave solution in Nuclear Matter at zero temperature and nonvanishing baryon number density in the framework of the so-called extended linear sigma model (eLSM). The eLSM is an effective model for the strong interaction based on the global chiral symmetry of quantum chromodynamics (QCD). It contains scalar, pseudoscalar, vector, and axial-vector mesons as well as baryons. In the latter sector, the nucleon and its chiral partner are introduced as parity doublets in the mirror assignment. The eLSM simultaneously provides a good description of hadrons in vacuum as well as Nuclear Matter ground-state properties. We find that an inhomogeneous phase in the form of a chiral density wave is realized, but only for densities larger than 2.4 ρ 0 , where ρ 0 is the Nuclear Matter ground-state density.
