Lattice study of electromagnetic conductivity of quark-gluon plasma in external magnetic field

2019/10/18 by Nikita Yu. Astrakhantsev, Victor V. Braguta, Massimo D'Elia +3 · 1 citation
Physics and Astronomy · #hep-lat #hep-ph #hep-th

paper · pdf · doi:10.1103/physrevd.102.054516

published as Phys. Rev. D 102, 054516 (2020) · 9 pages, 7 figures

arxiv created 2019/10/18 · arxiv updated 2020/10/07

Abstract

We study the electromagnetic (e.m.) conductivity of QGP in a magnetic background by lattice simulations with N_f = 2+1 dynamical rooted staggered fermions at the physical point. We study the correlation functions of the e.m.~currents at T=200, 250 MeV and use the Tikhonov approach to extract the conductivity. This is found to rise with the magnetic field in the direction parallel to it and to decrease in the transverse direction, giving evidence for both the Chiral Magnetic Effect and the magnetoresistance phenomenon in QGP. We also estimate the chiral charge relaxation time in QGP.

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• Transport coefficients of strongly interacting quark-gluon plasma including elastic and inelastic scattering within the dynamical quasiparticle model