Simulating chiral quarks in the epsilon-regime of QCD

TL;DR

This paper reports lattice QCD simulations with chiral fermions in small volumes, validating theoretical predictions and extracting key low-energy constants relevant to quantum chromodynamics.

Contribution

The study provides the first lattice QCD simulation results in the epsilon-regime with chiral fermions, confirming analytical predictions and determining low-energy constants.

Findings

Agreement of low-lying Dirac eigenvalues with theory

Matching mesonic correlation functions to predictions

Extraction of F_{pi} and Sigma constants

Abstract

We present simulation results for lattice QCD with chiral fermions in small volumes, where the epsilon-expansion of chiral perturbation theory applies. Our data for the low lying Dirac eigenvalues, as well as mesonic correlation functions, are in agreement with analytical predictions. This allows us to extract values for the leading Low Energy Constants F_{pi} and Sigma.