Nuclear Matter in a Chiral SU(3) Quark Mean-Field Model

Wang, Ping; Zhang, Z. Y.; You-wen, Yu

doi:10.1088/0253-6102/36/1/71

Cited by 24 publications

(30 citation statements)

References 19 publications

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“…This is because the χ field is solved simultaneously in the coupled equations of motion along with other medium fields [68]. In the present chiral SU(3) model, the modifications of scalar fields with the medium's temperature are consistent with the results of the chiral quark mean-field model [99].…”

Section: A the Scalar Fields Of The Chiral Model In Strange Hadronicsupporting

confidence: 77%

ϕ meson mass and decay width in strange hadronic matter

Kumar

2020

Phys. Rev. C

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The in-medium mass and decay width of the φ meson in hot asymmetric strange hadronic matter is calculated using an effective Lagrangian approach for the φKK interaction. The in-medium contributions of the KK loop to the φ meson self-energy are computed by the medium modified kaon and antikaon mass, which is evaluated using the chiral SU(3) model. To deal with the ultraviolet divergence, we regularize the loop integral of self-energy with a dipole form factor, and present the results for the range of cutoff mass c = 1-4 GeV. In chiral model calculations, for strange matter, we find that the mass of kaons and antikaons decreases with the increase in baryonic density, whereas the finite temperature causes an increase in the mass. We observed that the in-medium φ meson mass decreases slowly with baryonic density whereas the decay width increases rapidly. The results in the present investigation support a result in the literature which indicates a small downward shift in mass and a large broadening in the decay width. In the asymmetric strange hadronic matter, the study of the φ mesons can be relevant for compressed strange baryonic matter. The experimental observables such as dilepton spectra can perhaps be extracted from experiments in the future Facility for Antiproton and Ion Research (FAIR) facility at GSI.

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Section: A the Scalar Fields Of The Chiral Model In Strange Hadronicsupporting

confidence: 77%

ϕ meson mass and decay width in strange hadronic matter

Kumar

2020

Phys. Rev. C

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“…The constituent quarks and mesons (except pseudoscalar mesons) obtain their masses through the phenomenon of spontaneous symmetry breaking. The pseudoscalar mesons get their masses through the introduction of an explicit symmetry breaking term in meson self interaction which satisfies partially conserved axial-vector current relations [37,40].…”

Section: A Cqmf For Asymmetric Nuclear Mattermentioning

confidence: 99%

“…Many models on these lines have been constructed such as quark meson coupling model [28][29][30][31], chiral soliton model [32], cloudy bag model [33], Nambu-Jona-Lasinio (NJL) model [34], chiral SU(3) quark mean field (CQMF) [37,38] model etc. Magnetic moments of octet baryons at finite temperature and density of nuclear medium have been studied using the quark meson coupling model and the modified quark meson coupling model [4,39].…”

Section: Introductionmentioning

confidence: 99%

“…In the present work, we have used chiral SU(3) quark mean field model [37,38] to study medium modification of magnetic moments of octet baryons in isospin asymmetric nuclear matter at finite temperature and different densities of the medium. Mean field approximation method is known to be thermodynamically consistent because it satisfies the relevant thermodynamic identities and viral theorem [35] on the one hand whereas, on the other hand, one can easily determine the model parameters analytically from the specified set of values of nuclear matter properties at zero temperature [35,36], making it easy to study variations of the model and model dependent properties of baryons [2].…”

Section: Introductionmentioning

confidence: 99%

“…Mean field approximation method is known to be thermodynamically consistent because it satisfies the relevant thermodynamic identities and viral theorem [35] on the one hand whereas, on the other hand, one can easily determine the model parameters analytically from the specified set of values of nuclear matter properties at zero temperature [35,36], making it easy to study variations of the model and model dependent properties of baryons [2]. Mean field models enable one to study the properties of baryons in terms of quark and gluon degrees of freedom [37,38,43], which are of central importance in recent studies and in the present work as well.…”

Section: Introductionmentioning

confidence: 99%

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Octet baryon masses and magnetic moments in hot and dense isospin asymmetric nuclear matter

2019

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Medium modification of the magnetic moments of octet baryons in the isospin asymmetric nuclear medium at finite temperature has been calculated using medium modified quark and baryon masses derived in chiral SU(3) quark mean field model. The magnetic moments of baryons are found to vary significantly as a function of density of nuclear medium as well as with the increase in isospin asymmetry of the medium. The rise of temperature is found to decrease the effect of isospin asymmetry on masses and magnetic moments of baryons. The results of present investigation may be helpful to understand the experimentally observed values of octet baryon magnetic moments at different experimental facilities.

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