Pseudoscalar Flavor-Singlet Physics with Staggered Fermions
Eric B. Gregory, Alan Irving, Chris M. Richards, Craig McNeile,, Alistair Hart
TL;DR
This paper discusses lattice QCD calculations of flavor-singlet meson masses using improved staggered fermions, highlighting the importance of accurate propagator measurements for understanding fermion sea dynamics.
Contribution
It presents a detailed dynamical QCD study with improved staggered fermions, including extensive simulation data for flavor-singlet meson analysis.
Findings
Successful measurement of flavor-singlet propagators
Insights into fermion sea dynamics on the lattice
Validation of staggered fermion techniques
Abstract
Accurately calculating the mass of flavor-singlet meson states from numerical lattice simulations is an important milestone for lattice QCD. Careful measurement of the full pseudoscalar flavor-singlet propagator is also a crucial step in understanding the dynamics of the fermion sea on the lattice, in particular for potentially non-trivial formulations such as with 2+1-flavor staggered fermions. We briefly describe details of a dynamical QCD calculation using improved staggered fermions, with 30,000 trajectories, that was run for our studies of flavour singlet mesons.
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