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# 36th Annual International Symposium on Lattice Field Theory

22-28 July 2018
Kellogg Hotel and Conference Center
EST timezone

## Phase structure of three flavor QCD in external magnetic fields using HISQ fermions

Jul 25, 2018, 5:10 PM
20m
Centennial (Kellogg Hotel and Conference Center)

### Centennial

#### Kellogg Hotel and Conference Center

219 S Harrison Rd, East Lansing, MI 48824
Nonzero Temperature and Density

### Speaker

Dr Akio Tomiya (Central China Normal University)

### Description

We study the phase structure of QCD with three degenerate flavors in external magnetic fields using HISQ fermions. The simulations are performed on $16^3\times6$ and $24^3\times6$ lattices. In order to investigate the quark mass dependence of the QCD transition we vary the values of quark masses from 0.015 to 0.0009375 corresponding to $m_\pi=320$ MeV and $80$ MeV in the continuum limit. We found no indication of a first order phase transition in the current window of quark masses and external magnetic fields. Unlike to the case with standard staggered fermions inverse magnetic catalysis is always observed above the critical temperature. The microscopic origin of this phenomena as well as the volume effects are further discussed by looking into the Dirac eigenvalue spectrum.

### Primary authors

Dr Akio Tomiya (Central China Normal University) Dr Christian SCHMIDT (Universität Bielefeld) Prof. Heng-Tong Ding (Central China Normal University) Swagato Mukherjee (BNL) Ms Xiao-Dan WANG (Central China Normal University) Ms Yu ZHANG (Central China Normal University)

 Slides