Quark mean field model for nuclear matter and finite nuclei
TL;DR: In this paper, a quark mean field (QMF) model was proposed to describe the nucleon using the constituent quark model. But the model was applied to study the properties of finite nuclei after fixing all the parameters by the nuclear matter properties.
Abstract: We study nuclear matter and finite nuclei in terms of the quark mean field (QMF) model, in which we describe the nucleon using the constituent quark model. The meson mean fields, in particular the $\ensuremath{\sigma}$ meson, created by other nucleons act on quarks inside a nucleon and change the nucleon properties in nuclear medium. The QMF model predicts an increasing size of the nucleon as well as a reduction of the nucleon mass in the nuclear environment. The present model is applied to study the properties of finite nuclei after fixing all the parameters by the nuclear matter properties, and it is found to give satisfactory results on the nuclear properties.
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TL;DR: In this paper, the effect of hadron structure changes in a nuclear medium using the quark-meson coupling (QMC) model is studied, which is based on a mean field description of non-overlapping nucleon (or baryon) bags bound by the self-consistent exchange of scalar and vector mesons in the isoscalar and isovector channels.
196 citations
TL;DR: In this paper, the authors proposed a new EOS, QMF18, from the quark level, which describes robust observational constraints from a free-space nucleon, nuclear matter saturation, heavy pulsar measurements, and the tidal deformability of the very recent GW170817 observation.
Abstract: The matter state inside neutron stars (NSs) is an exciting problem in astrophysics, nuclear physics, and particle physics. The equation of state (EOS) of NSs plays a crucial role in the present multimessenger astronomy, especially after the event of GW170817. We propose a new NS EOS, “QMF18,” from the quark level, which describes robust observational constraints from a free-space nucleon, nuclear matter saturation, heavy pulsar measurements, and the tidal deformability of the very recent GW170817 observation. For this purpose, we employ the quark mean-field model, which allows us to tune the density dependence of the symmetry energy and effectively study its correlations with the Love number and the tidal deformability. We provide tabulated data for the new EOS and compare it with other recent EOSs from various many-body frameworks.
109 citations
TL;DR: In this article, a quark-mean-field (QMF) model was employed to tune the density dependence of the symmetry energy and study effectively its correlations with the Love number and the tidal deformability.
Abstract: Matter state inside neutron stars is an exciting problem in astrophysics, nuclear physics and particle physics. The equation of state (EOS) of neutron stars plays a crucial role in the present multimessenger astronomy, especially after the event of GW170817. We propose a new neutron star EOS "QMF18" from the quark level, which describes well robust observational constraints from free-space nucleon, nuclear matter saturation, heavy pulsar measurements and the tidal deformability of the very recent GW170817 observation. For this purpose, we employ the quark-mean-field (QMF) model, allowing one to tune the density dependence of the symmetry energy and study effectively its correlations with the Love number and the tidal deformability. We provide tabulated data for the new EOS and compare it with other recent EOSs from various many-body frameworks.
86 citations
Cites methods from "Quark mean field model for nuclear ..."
...…model is often called the quark-meson coupling (QMC) (e.g., Barik et al. 2013; Guichon 1988; Mishra et al. 2015, 2016; Saito et al. 2007), and the later is called the quark mean-field (QMF) model (e.g., Hu et al. 2014a,b; Shen & Toki 2000, 2002; Toki et al. 1998; Xing et al. 2016; Zhu & Li 2018)....
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TL;DR: In this paper, the phase transition to deconfined phase is studied and the consequences in the formation of neutron stars are investigated using the quark-meson coupling model for the hadron matter and the MIT bag model for quark matter in order to build the appropriate equations of state for hybrid stars.
Abstract: The phase transition to a deconfined phase is studied and the consequences in the formation of neutron stars are investigated. We use the quark-meson coupling model for the hadron matter and the MIT bag model for the quark matter in order to build the appropriate equations of state for the hybrid stars. The properties of the stars are then calculated. The differences between unpaired and color-flavor locked quark matter are discussed.
59 citations
TL;DR: The Quark-Meson-Coupling (QMC) model as discussed by the authors, which selfconsistently relates the dynamics of the internal quark structure of a hadron to the relativistic mean fields arising in nuclear matter, provides a natural explanation to many open questions in low energy nuclear physics, including the origin of many-body nuclear forces and their saturation, the spin-orbit interaction and properties of hadronic matter at a wide range of densities up to those occurring in the cores of neutron stars.
57 citations
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Book•
15 Nov 1984
TL;DR: In this article, a practical introduction to the principal ideas in gauge theory and their applications to elementary particle physics is presented, with a simple exposition backed up by many illustrative examples.
Abstract: This is a practical introduction to the principal ideas in gauge theory and their applications to elementary particle physics. It explains technique and methodology with simple exposition backed up by many illustrative examples. Derivations, some of well known results, are presented in sufficient detail to make the text accessible to readers entering the field for the first time. The book focuses on the strong interaction theory of quantum chromodynamics and the electroweak interaction theory of Glashow, Weinberg, and Salam, as well as the grand unification theory, exemplified by the simplest SU(5) model. Not intended as an exhaustive survey, the book nevertheless provides the general background necessary for a serious student who wishes to specialize in the field of elementary particle theory. Physicists with an interest in general aspects of gauge theory will also find the book highly useful.
1,164 citations
"Quark mean field model for nuclear ..." refers methods in this paper
...For this Lagrangian, we take into account the consequence of the non-perturbative gluon dynamics of spontaneous chiral symmetry breaking and quark confinement [19]....
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