scholarly journals Chiral susceptibility in ( 2+1 )-flavor QCD

2020 ◽  
Vol 102 (5) ◽  
Author(s):  
Jens Braun ◽  
Wei-jie Fu ◽  
Jan M. Pawlowski ◽  
Fabian Rennecke ◽  
Daniel Rosenblüh ◽  
...  
Keyword(s):  
Chiral Susceptibility

Direct Observation of Chiral Susceptibility in the Canonical Spin Glass AuFe

2004 ◽  
Vol 93 (24) ◽  
Author(s):  
Toshifumi Taniguchi ◽  
Kensuke Yamanaka ◽  
Hideya Sumioka ◽  
Teruo Yamazaki ◽  
Yoshikazu Tabata ◽  
...  
Keyword(s):  
Spin Glass ◽  
Direct Observation ◽  
Chiral Susceptibility

STABILITY OF VACUUM AND QCD PHASE TRANSITION IN DYSON-SCHWINGER EQUATION APPROACH OF QCD

2008 ◽  
Vol 17 (09) ◽  
pp. 1965-1978 ◽  
Author(s):  
YU-XIN LIU ◽  
HUAN CHEN ◽  
LEI CHANG ◽  
YUE ZHAO ◽  
WEI YUAN
Keyword(s):  
Phase Transition ◽  
Simple Model ◽  
Quark Mass ◽  
Equation Approach ◽  
Qcd Phase Transition ◽  
Current Quark Mass ◽  
Running Coupling ◽  
The Stability ◽  
Chiral Susceptibility ◽  
Current Quark

We describe briefly the effects of the running coupling strength, the current quark mass, the temperature and density on the QCD phase structure and its transition in the framework of Dyson-Schwinger equation approach of QCD. With a simple model, we show that the chiral susceptibility can identify the stability of the vacuum and plays an important role in describing the QCD Phase transition.

scholarly journals Crossover from a continuum study of chiral susceptibility

2009 ◽  
Vol 675 (1) ◽  
pp. 32-37 ◽  
Author(s):  
Min He ◽  
Fei Hu ◽  
Wei-Min Sun ◽  
Hong-Shi Zong
Keyword(s):  
Chiral Susceptibility

Proper time regularization at finite quark chemical potential

2016 ◽  
Vol 31 (14) ◽  
pp. 1650086 ◽  
Author(s):  
Jin-Li Zhang ◽  
Yuan-Mei Shi ◽  
Shu-Sheng Xu ◽  
Hong-Shi Zong
Keyword(s):  
Phase Transition ◽  
Chemical Potential ◽  
Chiral Limit ◽  
Proper Time ◽  
Quark Confinement ◽  
Chiral Phase ◽  
Chiral Phase Transition ◽  
Njl Model ◽  
Potential Case ◽  
Chiral Susceptibility

In this paper, we use the two-flavor Nambu–Jona-Lasinio (NJL) model to study the quantum chromodynamics (QCD) chiral phase transition. To deal with the ultraviolet (UV) issue, we adopt the popular proper time regularization (PTR), which is commonly used not only for hadron physics but also for the studies with magnetic fields. This regularization scheme can introduce the infrared (IR) cutoff to include quark confinement. We generalize the PTR to zero temperature and finite chemical potential case use a completely new method, and then study the chiral susceptibility, both in the chiral limit case and with finite current quark mass. The chiral phase transition is second-order in [Formula: see text] and [Formula: see text] and crossover at [Formula: see text] and [Formula: see text]. Three sets of parameters are used to make sure that the results do not depend on the parameter choice.

On the stability of two-flavor and three-flavor quark matter in quark stars within the framework of NJL model

2020 ◽  
Vol 35 (39) ◽  
pp. 2050321 ◽  
Author(s):  
Qianyi Wang ◽  
Tong Zhao ◽  
Hongshi Zong
Keyword(s):  
Quark Matter ◽  
Mean Field ◽  
Field Approximation ◽  
Mean Field Approximation ◽  
Chiral Phase ◽  
Quark Stars ◽  
Njl Model ◽  
The Stability ◽  
Chiral Susceptibility ◽  
Strong Interaction Matter

Following our recently proposed self-consistent mean field approximation approach, we have done some researches on the chiral phase transition of strong interaction matter within the framework of Nambu-Jona-Lasinio (NJL) model. The chiral susceptibility and equation of state (EOS) are computed in this work for both two-flavor and three-flavor quark matter for contrast. The Pauli–Villars scheme, which can preserve gauge invariance, is used in this paper. Moreover, whether the three-flavor quark matter is more stable than the two-flavor quark matter or not in quark stars is discussed in this work. In our model, when the bag constant are the same, the two-flavor quark matter has a higher pressure than the three-flavor quark matter, which is different from what Witten proposed in his pioneering work.

CROSSOVER FROM CHIRAL SUSCEPTIBILITY IN QED3

2012 ◽  
Vol 27 (36) ◽  
pp. 1250209 ◽  
Author(s):  
HONG-TAO FENG
Keyword(s):  
Phase Transition ◽  
Chiral Limit ◽  
Fermion Propagator ◽  
Transition Characteristic ◽  
Phase Transition Characteristic ◽  
Chiral Susceptibility

In the framework of truncated Dyson–Schwinger equation for fermion propagator, we investigate the chiral susceptibility with the rise of temperature in QED3, while it demonstrates a phase transition characteristic in the chiral limit and illustrates a crossover beyond chiral limit in this Abelian system.

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