Chiral perturbation theory for twisted mass QCD
Gernot M\"unster, Christian Schmidt (University of Muenster), Enno, E. Scholz (DESY Hamburg)
TL;DR
This paper develops a chiral perturbation theory framework for twisted mass lattice QCD, calculating pion properties and analyzing phase structure, including effects of lattice spacing and quenching.
Contribution
It introduces a next-to-leading order chiral perturbation theory approach for twisted mass lattice QCD, incorporating lattice spacing effects and phase structure analysis.
Findings
Pion masses and decay constants computed at next-to-leading order.
Inclusion of linear lattice spacing terms in calculations.
Analysis of phase structure in twisted mass lattice QCD.
Abstract
Quantum Chromodynamics on a lattice with Wilson fermions and a chirally twisted mass term for two degenerate quark flavours is considered in the framework of chiral perturbation theory. The pion masses and decay constants are calculated in next-to-leading order including terms linear in the lattice spacing a. We treat both unquenched and partially quenched QCD. We also discuss the phase structure of twisted mass lattice QCD.
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