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

Nikita Astrakhantsev, V. V. Braguta, Massimo D’Elia, A. Yu. Kotov, Aleksandr Nikolaev Orcid Logo, Francesco Sanfilippo

Physical Review D, Volume: 102, Issue: 5

Swansea University Author: Aleksandr Nikolaev Orcid Logo

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DOI (Published version): 10.1103/physrevd.102.054516

Abstract

We study the electromagnetic conductivity of QGP in a magnetic background by lattice simulations with Nf=2+1 dynamical rooted 2-stout smeared staggered fermions at the physical point. We study the correlation functions of the electromagnetic currents at T=200, 250 MeV and use the Tikhonov approach t...

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Published in: Physical Review D
ISSN: 2470-0010 2470-0029
Published: American Physical Society (APS) 2020
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URI: https://cronfa.swan.ac.uk/Record/cronfa57549
Abstract: We study the electromagnetic conductivity of QGP in a magnetic background by lattice simulations with Nf=2+1 dynamical rooted 2-stout smeared staggered fermions at the physical point. We study the correlation functions of the electromagnetic currents at T=200, 250 MeV and use the Tikhonov approach to extract the conductivity. The conductivity is found to rise with the magnetic field in the parallel direction 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.
College: Faculty of Science and Engineering
Issue: 5

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