Asia-Pacific Symposium for Lattice Field Theory (APLAT 2020)

Gell-Mann-Oakes-Renner relation in external magnetic fields at zero temperature

6 Aug 2020, 14:20

20m

online

QCD at nonzero Temperature and Density QCD at nonzero Temperature and Density

Speaker

Xiao-Dan Wang (*) (Central China Normal University)

Description

We present results of chiral condensates, masses and decay constants of neutral pseudo scalar mesons in (2+1)-flavor QCD in the presence of external magnetic fields at zero temperature. We discuss the validity of Gell-Mann-Oakes-Renner relation in a wide region of magnetic field strength $eB$ up to around 3.5 GeV${}^2$. The simulations were performed on ${32}^3\times 96$ lattices using the Highly Improved Staggered Quarks (HISQ) action with a single lattice cutoff $a$=0.117 fm and $m_{\pi }\approx$ 220 MeV. Sixteen values of $eB$ along the $z$ direction up to around 3.5 GeV${}^2$ have been applied in the simulation.

Presentation materials

APLAT_2020_xdwang.pdf