Mixed action computations on fine dynamical lattices

TL;DR

This paper explores mixed action lattice QCD simulations using Neuberger valence fermions on fine dynamical lattices with light sea quarks, focusing on spectral observables and chiral perturbation theory matching.

Contribution

It presents initial experiences and results of simulating Neuberger valence fermions on CLS configurations, including the setup and spectral observable analysis.

Findings

Successful simulation of Neuberger valence fermions on fine lattices

First results for spectral observables in mixed action setup

Exploration of chiral perturbation theory regimes

Abstract

We report on our first experiences in simulating Neuberger valence fermions on CLS $N_f=2$ configurations with light sea quark masses and small lattice spacings. Valence quark masses are considered that allow to explore the matching to (partially quenched) chiral perturbation theory both in the $\epsilon$- and $p$-regimes. The setup is discussed, and first results are presented for spectral observables.