scholarly journals Role of the conserved charges in the chiral symmetry restoration phase transition

2020 ◽  
Vol 102 (5) ◽  
Author(s):  
Pedro Costa ◽  
Renan Câmara Pereira ◽  
Constança Providência
Keyword(s):  
Phase Transition ◽  
Chiral Symmetry ◽  
Chiral Symmetry Restoration ◽  
Conserved Charges

scholarly journals Deconfinement in QCD with Dynamical Quarks

1997 ◽  
Vol 12 (13) ◽  
pp. 949-961 ◽  
Author(s):  
O. Borisenko ◽  
M. Faber ◽  
G. Zinovjev
Keyword(s):  
Phase Transition ◽  
Chiral Symmetry ◽  
Canonical Ensemble ◽  
Three Dimensional ◽  
Chiral Condensate ◽  
Chiral Symmetry Restoration ◽  
Coupling Region ◽  
Effective Potentials ◽  
Deconfinement Phase Transition ◽  
Grand Canonical

We study the phase structure of full QCD within the canonical ensemble (CE) with respect to triality in a lattice formulation. The procedure to calculate the effective potentials (EP) in the CE is given. We calculate the EP for the three-dimensional SU(2) gauge model at finite temperature in the strong coupling region. The potential exhibits a genuine deconfinement phase transition unlike the similar potential obtained in the grand canonical ensemble (GCE). Furthermore, we investigate the EP with the chiral condensate included. Contrary to other recent results we find chiral symmetry restoration in all triality sectors. Dealing with massless staggered fermions we observe chiral symmetry restoration accompanying a deconfinement phase transition of first-order. Above the critical point, besides two Z(2) symmetric "deconfining" vacua there exists a metastable "confining" vacuum in a wide region of the (Nt,γ)-plane. Such a picture could be interpreted as an indication for a mixed state of hadrons and quarks in the vicinity of the critical line.

scholarly journals LOW-MOMENTUM PION ENHANCEMENT INDUCED BY CHIRAL SYMMETRY RESTORATION

2004 ◽  
Vol 19 (03) ◽  
pp. 341-346
Author(s):  
PENGFEI ZHUANG
Keyword(s):  
Phase Transition ◽  
Chiral Symmetry ◽  
Finite Temperature ◽  
Pion Production ◽  
Dense Matter ◽  
Chiral Symmetry Restoration ◽  
Chiral Phase ◽  
Chiral Phase Transition ◽  
Symmetric Phase

The thermal and nonthermal pion production by sigma decay and its relation with chiral symmetry restoration in a hot and dense matter are investigated. The nonthermal decay into pions of sigma mesons which are popularly produced in chiral symmetric phase leads to a low-momentum pion enhancement as a possible signature of chiral phase transition at finite temperature and density.

scholarly journals Role of the thermal f0(500) in chiral symmetry restoration

2019 ◽  
Vol 99 (3) ◽  
Author(s):  
S. Ferreres-Solé ◽  
A. Gómez Nicola ◽  
A. Vioque-Rodríguez
Keyword(s):  
Chiral Symmetry ◽  
Chiral Symmetry Restoration
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