Tuning Actions and Observables in Lattice QCD

Abstract

We propose a strategy for conducting lattice QCD simulations at fixed volume but variable quark mass so as to investigate the physical effects of dynamical fermions. We present details of techniques which enable this to be carried out effectively, namely the tuning in bare parameter space and efficient stochastic estimation of the fermion determinant. Preliminary results and tests of the method are presented. We discuss further possible applications of these techniques.

17 pages, 4 eps figures; affiliation correction in this header + minor post-referee additions

References in corpus (10)

• A New Way to Set the Energy Scale in Lattice Gauge Theories and its Application to the Static Force and ${\alpha }_s$ in SU(2) Yang--Mills Theory
• Maximal variance reduction for stochastic propagators with applications to the static quark spectrum
• Dynamical Quark Effects in QCD
• A First Taste of Dynamical Fermions with an O(a) Improved Action
• Approximate Actions for Lattice QCD Simulation
• The non-perturbative O(a)-improved action for dynamical Wilson fermions
• Tempered Fermions in the Hybrid Monte Carlo Algorithm
• The Numerical Estimation of the Error Induced by the Valence Approximation
• Approximate actions for dynamical fermions
• QED2 as a testbed for interpolations between quenched and full QCD

Cited by in corpus (16)

• Effects of non-perturbatively improved dynamical fermions in QCD at fixed lattice spacing
• Quark mass dependence of hadron masses from lattice QCD
• Light hadron spectroscopy with O(a) improved dynamical fermions
• On the glueball spectrum in O(a)-improved lattice QCD
• Parallel Tempering in Lattice QCD with O(a)-Improved Wilson Fermions
• The Kentucky Noisy Monte Carlo Algorithm for Wilson Dynamical Fermions
• The topological susceptibility and f_pi from lattice QCD
• Loop Representations of the Quark Determinant in Lattice QCD
• Computational Methods for UV-Suppressed Fermions
• Hard hadron spectroscopy
• Lattice QCD with Suppressed High Momentum Modes of the Dirac Operator
• The topological susceptibility in `full' (UK)QCD
• Flavour-singlet pseudoscalar and scalar mesons
• UKQCD's latest results for the static quark potential and light hadron spectrum with O(a) improved dynamical fermions
• Heavy light decay constants on the lattice
• Light hadron spectrum using an O(a)-improved Wilson action with two dynamical quark flavours