Exploring the chiral regime with dynamical overlap fermions

TL;DR

This paper reports on the progress of dynamical overlap fermion simulations by JLQCD and TWQCD, exploring the chiral regime with two and three flavors of sea quarks on a lattice, and presenting physics results for the two-flavor case.

Contribution

It provides new insights into the chiral regime using dynamical overlap fermions with detailed simulation status and physics results for two-flavor configurations.

Findings

Simulations successfully cover p- and epsilon-regimes.

Physics results obtained for Nf=2 lattice.

Progress in 2+1 flavor simulations initiated.

Abstract

I report the status of the dynamical overlap fermion project by the JLQCD and TWQCD collaborations. So far, the simulations have been completed with two flavors of overlap sea quarks in a wide range of sea quark mass corresponding the $p$-regime and the $\epsilon$-regime on a $16^3\times 32$ lattice at $a=$0.12 fm. More recently, runs with 2+1 flavors of sea quarks have also started. This talk mainly discusses the physics results on the $N_f=2$ lattice after describing the lattice formulation and algorithms.