Contributions of the vector-channel at finite isospin chemical potential with the self-consistent mean field approximation

Wu, Zuqing; Shi, Chao; Ping, J. L.; Zong, Hong-Shi

doi:10.1103/physrevd.101.074008

Cited by 7 publications

(4 citation statements)

References 47 publications

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“…As mentioned above, Refs. [28,35,36,[38][39][40][41] point out that the parameter needs to be determined experimentally. A possible choice, for instance in Refs.…”

Section: Numerical Results and Discussionmentioning

confidence: 99%

“…In fact, just as shown by Refs. [28,35,36,[38][39][40][41][42][43], there is currently no physical requirement to determine the value of . In principle, needs to be constrained by experiments but not the self-consistent mean field approximation itself.…”

Section: Self-consistent Mean Field Approximation Of the Njl Modelmentioning

confidence: 99%

“…For example, the vector-isoscalar channel becomes vital when a finite chemical potential is discussed [29,30]. Similarly, if the axial chemical potential is involved, the isovector-isoscalar channel is important [31][32][33][34], and we cannot ignore the contributions of the axial-vector channel in a chirally imbalanced system [35]. At this point, if the system in the case of finite isospin and baryon densities is studied, we should consider the effects of the vector-isoscalar channels and the pseudoscalar-isovector channels [36].…”

Section: Introductionmentioning

confidence: 99%

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QCD phase diagram at finite isospin and baryon chemical potentials with the self-consistent mean field approximation *

Ping

Zong

2021

Chinese Phys. C

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The self-consistent mean field approximation of the two-flavor NJL model, with a free parameter to reflect the competition between the "direct" channel and the "exchange" channel, is employed to study the QCD phase structure at finite isospin chemical potential , finite baryon chemical potential and finite temperature T, and especially to study the location of the QCD critical point. Our results show that in order to match the corresponding lattice results of isospin density and energy density, the contributions of the "exchange" channel need to be considered in the framework of the NJL model, and a weighting factor should be taken. It is also found that for fixed isospin chemical potentials, the lower temperature of the phase transition is obtained with increasing in the plane, and the largest difference of the phase transition temperature with different 's appears at . At the temperature of the QCD critical end point (CEP) decreases with increasing , while the critical baryon chemical potential increases. At high isospin chemical potential ( MeV), the temperature of the QCD tricritical point (TCP) increases with increasing , and in the low temperature regions the system will transition from the pion superfluidity phase to the normal phase as increases. At low density, the critical temperature of the QCD phase transition with different 's rapidly increases with at the beginning, and then increases smoothly around MeV. In the high baryon density region, the increase of the isospin chemical potential will raise the critical baryon chemical potential of the phase transition.

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“…As mentioned above, Refs. [28,35,36,[38][39][40][41] point out that the parameter needs to be determined experimentally. A possible choice, for instance in Refs.…”

Section: Numerical Results and Discussionmentioning

confidence: 99%

Section: Self-consistent Mean Field Approximation Of the Njl Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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QCD phase diagram at finite isospin and baryon chemical potentials with the self-consistent mean field approximation *

Ping

Zong

2021

Chinese Phys. C

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“…Recently, we proposed a self-consistent mean-field approximation method for the NJL model [58][59][60][61][62]. This method introduces a free parameter α to mimic the weight between the direct channels contributions and the exchange channels contributions when applying the mean-field approximation.…”

Section: The Effects Of Chiral Chemical Potential On Qcd Phase Structurementioning

confidence: 99%

A Brief Review of Chiral Chemical Potential and Its Physical Effects

et al. 2020

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Nontrivial topological gluon configuration is one of the remarkable features of the Quantum Chromodynamics (QCD). Due to chiral anomaly, the chiral imbalance between right- and left-hand quarks can be induced by the transition of the nontrivial gluon configurations between different vacuums. In this review, we will introduce the origin of the chiral chemical potential and its physical effects. These include: (1) the chiral imbalance in the presence of strong magnetic and related physical phenomena; (2) the influence of chiral chemical potential on the QCD phase structure; and (3) the effects of chiral chemical potential on quark stars. Moreover, we propose for the first time that quark stars are likely to be a natural laboratory for testing the destruction of strong interaction CP.

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High-energy phase diagrams with charge and isospin axes under heavy-ion collision and stellar conditions

Aryal

Constantinou²,

Farias³

et al. 2020

Phys. Rev. D

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We investigate the phase transition from hadron to quark matter in the general case without the assumption of chemical equilibrium with respect to weak decays. The effects of net strangeness on charge and isospin fractions, chemical potentials, and temperature are studied in the context of the Chiral Mean Field (CMF) model that incorporates chiral symmetry restoration and deconfinement. The extent to which these quantities are probed during deconfinement in conditions expected to exist in protoneutron stars, binary neutron-star mergers, and heavy-ion collisions is analyzed quantitatively via the construction of 3-dimensional phase diagrams.

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Contributions of the vector-channel at finite isospin chemical potential with the self-consistent mean field approximation

Cited by 7 publications

References 47 publications

QCD phase diagram at finite isospin and baryon chemical potentials with the self-consistent mean field approximation *

QCD phase diagram at finite isospin and baryon chemical potentials with the self-consistent mean field approximation *

A Brief Review of Chiral Chemical Potential and Its Physical Effects

High-energy phase diagrams with charge and isospin axes under heavy-ion collision and stellar conditions

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