Topological susceptibility and QCD phase transition with 2+1 flavor M\"obius domain wall fermion at finite temperature

TL;DR

This paper investigates the topological susceptibility and chiral properties of QCD at finite temperature using 2+1 flavor M"obius domain wall fermions, highlighting the impact of fermion action choice on discretization errors.

Contribution

The study provides new finite-temperature lattice QCD results with M"obius domain wall fermions at physical quark masses, focusing on topological susceptibility and chiral observables.

Findings

Topological susceptibility measured at various temperatures with reduced discretization errors.

Chiral condensate and disconnected susceptibility analyzed across temperature range.

Results suggest sensitivity of topological susceptibility to fermion action choice.

Abstract

The topological susceptibility is one of the quantities that has a large discretization error, and the error can be sensitive to the choice of fermion action. We report on our results from physical point simulations with 2+1 flavor M\"obius domain wall fermion at finite temperature. We also present the chiral condensate and disconnected susceptibility. The temporal lattice size is Nt=12 and 16, and the temperature range is around 140 MeV to 250 MeV for the chiral condensate and susceptibility. A coarse lattice with Nt = 10 covers up to 500 MeV to measure the topological susceptibility.