Chiral-symmetry constraints on the critical temperature in QCD

1989 ◽  
Vol 39 (1) ◽  
pp. 323-328 ◽  
Author(s):  
J. Cleymans ◽  
A. Kocić ◽  
M. D. Scadron
Keyword(s):  
Critical Temperature ◽  
Chiral Symmetry ◽  
Symmetry Constraints

scholarly journals Chiral symmetry constraints on resonant amplitudes

2018 ◽  
Vol 778 ◽  
pp. 43-47 ◽  
Author(s):  
Peter C. Bruns ◽  
Maxim Mai
Keyword(s):  
Chiral Symmetry ◽  
Symmetry Constraints

scholarly journals Chiral symmetry constraints on the K+ interaction with the nuclear pion cloud

1995 ◽  
Vol 353 (2-3) ◽  
pp. 161-167 ◽  
Author(s):  
Ulf-G. Meißner ◽  
E. Oset ◽  
A. Pich
Keyword(s):  
Chiral Symmetry ◽  
Pion Cloud ◽  
Symmetry Constraints

scholarly journals Can axial U(1) anomaly disappear at high temperature?

2018 ◽  
Vol 175 ◽  
pp. 01012 ◽  
Author(s):  
Hidenori Fukaya
Keyword(s):  
Phase Transition ◽  
High Temperature ◽  
Critical Temperature ◽  
Lattice Qcd ◽  
Chiral Symmetry ◽  
Symmetry Violation ◽  
Simulation Data ◽  
Strong Suppression ◽  
Chiral Phase ◽  
Numerical Evidence

In our recent study of two-flavor lattice QCD using chiral fermions, we find strong suppression of axial U(1) anomaly above the critical temperature of chiral phase transition. Our simulation data also indicate suppression of topological susceptibility. In this talk, we present both of our theoretical and numerical evidence for disappearance of axial U(1) anomaly, emphasizing the importance of controlling lattice chiral symmetry violation, which is enhanced at high temperature.

INDUCED θ-TERM IN NAMBU-JONA-LASINIO MODEL AT FINITE TEMPERATURES

1994 ◽  
Vol 09 (09) ◽  
pp. 785-790
Author(s):  
CHOON-LIN HO ◽  
BAMBI HU ◽  
HOI-LAI YU
Keyword(s):  
Critical Temperature ◽  
Chiral Symmetry ◽  
Local Symmetry

We have studied the induced topological θ-term in the Nambu-Jona-Lasinio model at finite temperatures. It is found that it vanishes at the same critical temperature at which chiral symmetry is restored. This shows that hidden local symmetry works even at finite temperatures.

scholarly journals Determination of the temperature dependence of the up- and down-quark masses in QCD

2016 ◽  
Vol 31 (36) ◽  
pp. 1630042 ◽  
Author(s):  
C. A. Dominguez ◽  
L. A. Hernandez
Keyword(s):  
Critical Temperature ◽  
Temperature Dependence ◽  
Chiral Symmetry ◽  
Quark Mass ◽  
Pion Mass ◽  
Finite Energy ◽  
Quark Condensate ◽  
Thermal Dependence ◽  
Quark Masses ◽  
Down Quark

The temperature dependence of the sum of the QCD up- and down-quark masses, (mu[Formula: see text]+[Formula: see text]md) and the pion decay constant, f[Formula: see text], are determined from two thermal finite energy QCD sum rules for the pseudoscalar-current correlator. This quark mass remains mostly constant for temperatures well below the critical temperature for deconfinement/chiral-symmetry restoration. As this critical temperature is approached, the quark mass increases sharply with increasing temperature. This increase is far more pronounced if the temperature dependence of the pion mass (determined independently from other methods) is taken into account. The behavior of f[Formula: see text](T) is consistent with the expectation from chiral symmetry, i.e. that it should follow the thermal dependence of the quark condensate, independently of the quark mass.

scholarly journals FOOTPRINTS OF A BROAD σ(600) IN WEAK-INTERACTION PROCESSES

2002 ◽  
Vol 17 (10) ◽  
pp. 569-581 ◽  
Author(s):  
A. D. POLOSA ◽  
N. A. TÖRNQVIST ◽  
M. D. SCADRON ◽  
V. ELIAS
Keyword(s):  
Chiral Symmetry ◽  
Weak Interaction ◽  
Intermediate State ◽  
Interaction Matrix ◽  
Matrix Elements ◽  
Weak Decays ◽  
Interaction Processes ◽  
Symmetry Constraints ◽  
Three Body

We explore how chiral-symmetry constraints on weak-interaction matrix elements point toward the existence of an intermediate-state σ in several different weak-interaction processes. Particular attention is directed toward recent evidence for a σ within three-body nonleptonic weak decays.

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