Warm asymmetric matter in the quark-meson coupling model

Panda, P. K.; Krein, G.; Menezes, D. P.; Providência, Constança

doi:10.1103/physrevc.68.015201

Cited by 30 publications

(22 citation statements)

References 57 publications

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“…The resulting EoS was applied to discuss the liquid-gas phase transition in nuclear matter below the saturation density. The calculated critical temperature for the transition and temperature dependence of the effective mass were compared with those given by the Walecka and other related models.The equation of state of warm (up to T = 100 MeV) asymmetric nuclear matter in the QMC model and mechanical and chemical instabilities were studied as a function of density and isospin asymmetry[27]. The binodal section, essential in the study of the liquid-gas phase transition, was also constructed and discussed.…”

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confidence: 99%

Quark–Meson-Coupling (QMC) model for finite nuclei, nuclear matter and beyond

Guichon

Stone

Thomas

2018

Progress in Particle and Nuclear Physics

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The Quark-Meson-Coupling model, which self-consistently 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.Here we focus on four aspects of the model (i) a full comprehensive survey of the theory, including the latest developments, (ii) extensive application of the model to ground state properties of finite nuclei and hypernuclei, with a discussion of similarities and differences between the QMC and Skyrme energy density functionals, (iii) equilibrium conditions and composition of hadronic matter in cold and warm neutron stars and their comparison with the outcome of relativistic mean-field theories and, (iv) tests of the fundamental idea that hadron structure changes in-medium.

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confidence: 99%

Quark–Meson-Coupling (QMC) model for finite nuclei, nuclear matter and beyond

Guichon

Stone

Thomas

2018

Progress in Particle and Nuclear Physics

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“…In the QMC model, nuclear matter is described as a system of non-overlapping MIT bags which interact through the exchange of scalar and vector mean fields. An earlier study of ANM within this model has been focused on the effect of isospin asymmetry and temperature on the equation of state and on the coexistence surface [4]. We here consider an extension of the model that includes the scalar isovector virtual δ(a 0 (980)) field [5].…”

Section: Introductionmentioning

confidence: 99%

Low density instabilities in asymmetric nuclear matter within the quark-meson coupling (QMC) model with the δ meson

2009

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In the present work we include the isovector-scalar δ-meson in the quark-meson coupling model (QMC) and study the properties of asymmetric nuclear within QMC without and with the δ-meson. Recent constraints set by isospin diffusion on the slope parameter of the nuclear symmetry energy at saturation density are used to adjust the model parameters. The thermodynamical spinodal surfaces are obtained and the instability region at subsaturation densities within QMC and QMCδ models are compared with mean-field relativistic models. The distillation effect in the QMC model is discussed.

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“…With the development of the QMC model persistently, it is not only applied on the study of nuclear structure, but also on the hadron physics, astrophysics and particle physics [11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Quark mean field model with pion and gluon corrections

Xing

Shen

2016

Phys. Rev. C

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The properties of nuclear matter and finite nuclei are studied within the quark mean field (QMF) model by taking the effects of pion and gluon into account at the quark level. The nucleon is described as the combination of three constituent quarks confined by a harmonic oscillator potential. To satisfy the spirit of QCD theory, the contributions of pion and gluon on the nucleon structure are treated in second-order perturbation theory. For the nuclear many-body system, nucleons interact with each other by exchanging mesons between quarks. With different constituent quark mass, m q , we determine three parameter sets about the coupling constants between mesons and quarks, named as QMF-NK1, QMF-NK2, and QMF-NK3 by fitting the ground-state properties of several closed-shell nuclei. It is found that all of the three parameter sets can give satisfactory description on properties of nuclear matter and finite nuclei, meanwhile they can also predict the larger neutron star mass around 2.3M ⊙ without the hyperon degrees of freedom.

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Warm asymmetric matter in the quark-meson coupling model

Cited by 30 publications

References 57 publications

Quark–Meson-Coupling (QMC) model for finite nuclei, nuclear matter and beyond

Quark–Meson-Coupling (QMC) model for finite nuclei, nuclear matter and beyond

Low density instabilities in asymmetric nuclear matter within the quark-meson coupling (QMC) model with the δ meson

Quark mean field model with pion and gluon corrections

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