Pion and nucleon in two flavour QCD with unimproved Wilson fermions

Abstract

We calculate pion mass, pion decay constant, PCAC quark mass and nucleon mass in two flavour lattice QCD with unimproved Wilson fermion and gauge actions. Simulations are performed using DD-HMC algorithm at two lattice spacings and two volumes for several values of the quark mass. The cutoff effects in pion mass and nucleon mass for the explored region of parameter space are found to be negligible. The chiral behaviours of pion mass, pion decay constant and quark condensate are found to be qualitatively consistent with NLO chiral perturbation theory.

18 pages and 15 figures

References in corpus (4)

• Nucleon mass and sigma term from lattice QCD with two light fermion flavors
• Topological charge density correlator in Lattice QCD with two flavours of unimproved Wilson fermions
• Exploring autocorrelations in two-flavour Wilson Lattice QCD using DD-HMC algorithm
• Effect of r averaging on Chiral Anomaly in Lattice QCD with Wilson Fermion: Finite volume and cutoff effects

Cited by in corpus (3)

• The nucleon mass and pion-nucleon sigma term from a chiral analysis of lattice QCD world data
• Scale setting and the light baryon spectrum in $N_f=2+1$ QCD with Wilson fermions
• Nucleon generalized form factors and sigma term from lattice QCD near the physical quark mass