Twisted mass quarks and the phase structure of lattice QCD
F. Farchioni, R. Frezzotti, K. Jansen, I. Montvay, G.C. Rossi, E., Scholz, A. Shindler, N. Ukita, C. Urbach, I. Wetzorke
TL;DR
This paper explores the phase structure of twisted mass lattice QCD at zero temperature, revealing metastabilities linked to chiral symmetry breaking and interpreting them through effective potential models.
Contribution
It provides new insights into the phase structure and metastability phenomena in twisted mass lattice QCD, connecting them to chiral symmetry and effective potential models.
Findings
Metastabilities observed in plaquette observable
Strong dependence on untwisted quark mass sign
Interpretation via chiral symmetry breaking and effective potential
Abstract
The phase structure of zero temperature twisted mass lattice QCD is investigated. We find strong metastabilities in the plaquette observable when the untwisted quark mass assumes positive or negative values. We provide interpretations of this phenomenon in terms of chiral symmetry breaking and the effective potential model of Sharpe and Singleton.
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