CHIRAL SYMMETRY BREAKING IN A PHENOMENOLOGICAL DESCRIPTION OF THE QCD VACUUM

1992 ◽  
Vol 01 (01) ◽  
pp. 73-94 ◽  
Author(s):  
S. SCHRAMM ◽  
W. GREINER
Keyword(s):  
Symmetry Breaking ◽  
Chiral Symmetry ◽  
Chiral Symmetry Breaking ◽  
Phenomenological Description ◽  
Bcs Theory ◽  
Qcd Vacuum

Quark–antiquark condensation in the QCD groundstate is discussed in the framework of BCS theory. Adopting a phenomenological interaction between the quarks, the vacuum wavefunction is determined variationally. Taking these results, the properties of the vacuum and its excitations are determined. In addition the effect of instanton-type induced quark interactions is discussed.

scholarly journals COMMENTS ON THE VACUUM ORIENTATIONS IN QCD

1992 ◽  
Vol 07 (33) ◽  
pp. 3147-3154 ◽  
Author(s):  
ZHENG HUANG ◽  
K.S. VISWANATHAN ◽  
DAN-DI WU
Keyword(s):  
Symmetry Breaking ◽  
Chiral Symmetry ◽  
Ward Identity ◽  
Chiral Symmetry Breaking ◽  
Dynamical Chiral Symmetry Breaking ◽  
Qcd Vacuum ◽  
Quark Field ◽  
Definition Of ◽  
Anomalous Ward Identity ◽  
Vacuum Alignment

We study the QCD vacuum orientation angles in correlation with the strong CP phases. A vacuum alignment equation of the dynamical chiral symmetry breaking is derived based on the anomalous Ward identity. It is emphasized that a chiral rotation of the quark field causes a change of the vacuum orientation and a change in the definition of the light pseudoscalar generators. As an illustration of the idea, η→2π decays are carefully studied in different chiral frames.

scholarly journals A Possible Resolution to Troubles of SU(2) Center Vortex Detection in Smooth Lattice Configurations

Universe ◽  
2021 ◽  
Vol 7 (5) ◽  
pp. 122
Author(s):  
Rudolf Golubich ◽  
Manfried Faber
Keyword(s):  
Symmetry Breaking ◽  
Quantum Chromodynamics ◽  
Chiral Symmetry ◽  
Chiral Symmetry Breaking ◽  
Vortex Model ◽  
Center Vortex ◽  
Vortex Detection

The center vortex model of quantum-chromodynamics can explain confinement and chiral symmetry breaking. We present a possible resolution for problems of the vortex detection in smooth configurations and discuss improvements for the detection of center vortices.

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