The 38th International Symposium on Lattice Field Theory

Critical endpoints in (2+1)- and 4-flavor QCD with Wilson-Clover fermions

26 Jul 2021, 22:00

15m

Oral presentation QCD at nonzero Temperature and Density QCD at nonzero Temperature and Density

Speaker

Dr Hiroshi Ohno (Center for Computational Sciences, University of Tsukuba)

Description

We report our study on critical endpoints of finite temperature phase transitions in (2+1)- and 4-flavor QCD with Wilson-Clover fermions. As an extension of our previous calculations on coarser lattices, we performed our simulations on lattices with temporal extents of 8 and 10 for 2+1 and 4 flavors, respectively, to carry out continuum extrapolations more precisely. For the calculation in (2+1)- flavor QCD, as a first step, we fixed $\beta$ and ${\kappa }_s$ values to 1.75 and 0.133000, respectively, and varied ${\kappa }_l$, where we found that the phase transition seems to be of first order. In 4 flavor QCD we tried to determine a location of the critical endpoint from calculations at various combinations of $\beta$ and $\kappa$ values with three different spatial volumes. The finite size scaling of chiral susceptibility under the assumption of three-dimensional Z(2) universality suggests that the critical endpoint exists around $\beta$ = 1.65.

Presentation materials

384 M4Th Hiroshi Ohno

lattice2021_Ohno.pdf