scholarly journals QCD magnetic susceptibility at finite temperature beyond the chiral limit

2013 ◽  
Vol 87 (11) ◽  
Author(s):  
Seung-il Nam
Keyword(s):  
Magnetic Susceptibility ◽  
Finite Temperature ◽  
Chiral Limit

EFFECTIVE P, T RESTORATION IN CHERN–SIMONS SUPERCONDUCTIVITY

1994 ◽  
Vol 08 (08n09) ◽  
pp. 561-570 ◽  
Author(s):  
S. S. MANDAL ◽  
S. RAMASWAMY ◽  
V. RAVISHANKAR
Keyword(s):  
Dielectric Constant ◽  
Magnetic Susceptibility ◽  
Normal State ◽  
Time Reversal ◽  
Finite Temperature ◽  
Narrow Range ◽  
Mean Field ◽  
Smooth Transition ◽  
The Mean ◽  
Chern Simons

We present an analysis of the finite temperature Chern–Simons superconductivity model within the mean field framework. Using analytical and numerical means we compute the changes in the magnetic susceptibility, conductivity, the dielectric constant, and the specific heat as the temperature is increased. Over a narrow range of temperatures the properties of the system show a smooth transition to the normal state. Accompanying this is the near vanishing of the off-diagonal conductivity, signifying the effective restoration of parity and time reversal symmetries.

NJL model with the modified quark-dependent coupling strength G

2017 ◽  
Vol 32 (20) ◽  
pp. 1750107 ◽  
Author(s):  
Zhou-You Fan ◽  
Wen-Kai Fan ◽  
Qing-Wu Wang ◽  
Hong-Shi Zong
Keyword(s):  
Coupling Strength ◽  
Finite Temperature ◽  
Chemical Potential ◽  
Chiral Limit ◽  
Pion Mass ◽  
Quark Condensate ◽  
Qcd Phase Diagram ◽  
Njl Model ◽  
Lattice Quantum ◽  
Current Quark

In this paper, the coupling strength G of the Nambu–Jona-Lasinio (NJL) model is modified by incorporating quark’s feedback into the gluon propagator. The modified two-flavor NJL model with the quark-dependent coupling strength is explored. The quark condensate in this framework has a conspicuous agreement with the lattice quantum chromodynamics (QCD) results at finite temperature. Then, it is compared with the original NJL model in both zero (chiral limit) and nonzero current quark mass. The QCD phase diagram and susceptibilities are investigated in the temperature–chemical potential [Formula: see text] plane. Therefore, the pseudo-critical temperature [Formula: see text] and the critical end point (CEP) are worked out and compared with original NJL model or lattice QCD results. In addition, the pion mass and decay constant are studied at finite temperature.

scholarly journals Finite temperature QCD phase transition and its scaling window from Wilson twisted mass fermions

2022 ◽  
Vol 258 ◽  
pp. 05012
Author(s):  
A.Yu. Kotov ◽  
M.P. Lombardo ◽  
A. Trunin
Keyword(s):  
Phase Transition ◽  
Finite Temperature ◽  
Chiral Limit ◽  
Mean Field ◽  
Universality Class ◽  
Chiral Phase ◽  
Scaling Properties ◽  
Twisted Mass ◽  
Finite Temperature Qcd ◽  
Field Behaviour

We study the properties of finite temperature QCD using lattice simulations with Nf = 2 + 1 + 1 Wilson twisted mass fermions for pion masses from physical up to heavy quark regime. In particular, we investigate the scaling properties of the chiral phase transition close to the chiral limit. We found compatibility with O(4) universality class for pion masses up to physical and in the temperature range [120 : 300] MeV. We also discuss other alternatives, including mean field behaviour or Z2 scaling. We provide an estimation of the critical temperature in the chiral limit, T0 = 134−4+6 MeV, which is stable against various scaling scenarios.

scholarly journals Magnetic susceptibility of QCD at zero and at finite temperature from the lattice

2012 ◽  
Vol 86 (9) ◽  
Author(s):  
G. S. Bali ◽  
F. Bruckmann ◽  
M. Constantinou ◽  
M. Costa ◽  
G. Endrődi ◽  
...  
Keyword(s):  
Magnetic Susceptibility ◽  
Finite Temperature
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