Lattice Gauge Actions for Fixed Topology
XLF Collaboration: W. Bietenholz (1), K. Jansen (2), K.-I. Nagai (2),, S. Necco (3), L. Scorzato (1), S. Shcheredin (1), ((1) Humboldt U., Berlin;, (2) NIC, Zeuthen & DESY, Zeuthen; (3) Marseille, CPT)
TL;DR
This paper evaluates lattice gauge actions designed to suppress topological sector transitions in QCD, aiming to improve simulations in the epsilon-regime and with dynamical quarks.
Contribution
It introduces and tests a set of gauge actions that suppress small plaquette values to stabilize topological sectors in lattice QCD simulations.
Findings
Suppressed topological sector transitions in tested actions
Potential improvements for epsilon-regime simulations
Enhanced stability in dynamical quark simulations
Abstract
We test a set of lattice gauge actions for QCD that suppress small plaquette values and in this way also suppress transitions between topological sectors. This is well suited for simulations in the epsilon-regime and it is expected to help in numerical simulations with dynamical quarks.
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