scholarly journals Chiral symmetry breakdown. I. Gauge dependence in constant vertex approximation

1987 ◽  
Vol 28 (10) ◽  
pp. 2488-2493 ◽  
Author(s):  
D. Atkinson ◽  
P. W. Johnson
Keyword(s):  
Chiral Symmetry ◽  
Gauge Dependence ◽  
Symmetry Breakdown

scholarly journals Chiral-Symmetry Breakdown in Large-NChromodynamics

1980 ◽  
Vol 45 (2) ◽  
pp. 100-102 ◽  
Author(s):  
Sidney Coleman ◽  
Edward Witten
Keyword(s):  
Chiral Symmetry ◽  
Symmetry Breakdown

Chiral Symmetry Breaking in Quantum R2-Gravity

1997 ◽  
Vol 12 (34) ◽  
pp. 2599-2612
Author(s):  
Yu. I. Shil'nov ◽  
V. V. Chitov ◽  
A. T. Kotwicki
Keyword(s):  
Numerical Analysis ◽  
Chiral Symmetry ◽  
Chiral Symmetry Breaking ◽  
Ladder Approximation ◽  
Mass Generation ◽  
Dynamical Mass ◽  
Gauge Dependence ◽  
Flat Background ◽  
Dynamical Breaking ◽  
Model Phase

Schwinger–Dyson equations have been used to investigate the dynamical breaking of chiral symmetry in quantum R2-gravity on the flat background. The dynamical mass generation has been shown to exist in both 2-D and 4-D cases. This phenomenon has been noted to take place in a different gauge in spite of the gauge dependence of the qualitative values caused by using the ladder approximation. The numerical analysis of the model phase structure has been done in details.

SIMULATING DCC SIGNALS IN COSMIC RAYS

2007 ◽  
Vol 16 (09) ◽  
pp. 2872-2875 ◽  
Author(s):  
PEDRO VIANA ◽  
EDUARDO S. FRAGA ◽  
JOÃO R. T. DE MELO NETO
Keyword(s):  
Cosmic Rays ◽  
Chiral Symmetry ◽  
Cosmic Ray ◽  
High Energy ◽  
Ultra High Energy ◽  
Preliminary Results ◽  
Symmetry Breakdown ◽  
Disoriented Chiral Condensates ◽  
High Energy Collisions

We investigate the production of disoriented chiral condensates in ultra high energy collisions and look for an intrinsic signature they could produce in ongoing and future cosmic ray experiments. This is implemented by studying the atmospheric showers generated after the chiral symmetry breakdown. We also speculate on the nature of the events and its connection with Centauro and anti-Centauro observations. Some preliminary results are presented.

scholarly journals ENTROPY IN QUANTUM CHROMODYNAMICS

2012 ◽  
Vol 27 (09) ◽  
pp. 1230011 ◽  
Author(s):  
JOHN M. CORNWALL
Keyword(s):  
Chiral Symmetry ◽  
Chiral Symmetry Breaking ◽  
Entanglement Entropy ◽  
Configurational Entropy ◽  
Zero Temperature ◽  
Massive Quark ◽  
Flux Tubes ◽  
Qcd Vacuum ◽  
Symmetry Breakdown

We review the role of zero-temperature entropy in several closely-related contexts in QCD. The first is entropy associated with disordered condensates, including [Formula: see text]. The second is effective vacuum entropy arising from QCD solitons such as center vortices, yielding confinement and chiral symmetry breaking. The third is entanglement entropy, which is entropy associated with a pure state, such as the QCD vacuum, when the state is partially unobserved and unknown. Typically, entanglement entropy of an unobserved three-volume scales not with the volume but with the area of its bounding surface. The fourth manifestation of entropy in QCD is the configurational entropy of light-particle world-lines and flux tubes; we argue that this entropy is critical for understanding how confinement produces chiral symmetry breakdown, as manifested by a dynamically-massive quark, a massless pion, and a [Formula: see text] condensate.

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