scholarly journals Eigenvalue spectra of QCD and the fate of UA(1) breaking towards the chiral limit

2021 ◽  
Vol 104 (9) ◽  
Author(s):  
Olaf Kaczmarek ◽  
Lukas Mazur ◽  
Sayantan Sharma
Keyword(s):  
Chiral Limit

Towards the chiral limit with dynamical blocked Wilson fermions

1992 ◽  
Vol 46 (8) ◽  
pp. 3618-3629 ◽  
Author(s):  
I. Barbour ◽  
E. Laermann ◽  
Th. Lippert ◽  
K. Schilling
Keyword(s):  
Chiral Limit ◽  
Wilson Fermions

t-expansion calculation of〈ψ¯ψ〉in the chiral limit

1994 ◽  
Vol 49 (9) ◽  
pp. 4751-4754 ◽  
Author(s):  
D. Schreiber
Keyword(s):  
Chiral Limit

scholarly journals Chiral limit of nuclear physics

1997 ◽  
Vol 56 (6) ◽  
pp. 3307-3310 ◽  
Author(s):  
Aurel Bulgac ◽  
Gerald A. Miller ◽  
Mark Strikman
Keyword(s):  
Nuclear Physics ◽  
Chiral Limit

CHIRALLY EXTENDED QUANTUM CHROMODYNAMICS

1995 ◽  
Vol 06 (05) ◽  
pp. 725-742 ◽  
Author(s):  
RICHARD C. BROWER ◽  
YUE SHEN ◽  
CHUNG-I TAN
Keyword(s):  
Quantum Chromodynamics ◽  
Quark Mass ◽  
Continuum Limit ◽  
Chiral Limit ◽  
Scalar Fields ◽  
Weak Coupling Limit ◽  
Slowing Down ◽  
Large N ◽  
Chiral Invariance ◽  
The Continuum

We propose an extended Quantum Chromodynamics (XQCD) Lagrangian in which the fermions are coupled to elementary scalar fields through a Yukawa coupling which preserves chiral invariance. Our principle motivation is to find a new lattice formulation for QCD which avoids the source of critical slowing down usually encountered as the bare quark mass is tuned to the chiral limit. The phase diagram and the weak coupling limit for XQCD are studied. They suggest a conjecture that the continuum limit of XQCD is the same as the continuum limit of conventional lattice formulation of QCD. As examples of such universality, we present the large N solutions of two prototype models for XQCD, in which the mass of the spurious pion and sigma resonance go to infinity with the cut-off. Even if the universality conjecture turns out to be false, we believe that XQCD will still be useful as a low energy effective action for QCD phenomenology on the lattice. Numerical simulations are recommended to further investigate the possible benefits of XQCD in extracting QCD predictions.

Sign in / Sign up

Export Citation Format

Share Document