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

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arxiv 1910.08516 v1 pith:B6L6564I submitted 2019-10-18 hep-lat hep-phhep-th

Nikita Yu. Astrakhantsev , Victor V. Braguta , Massimo D'Elia , Andrey Yu.Kotov , Aleksandr A. Nikolaev , Francesco Sanfilippo This is my paper
classification hep-lathep-phhep-th
keywords magneticconductivitychiraldirectionelectromagneticfieldlatticeapproach
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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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Cited by 2 Pith papers

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  1. Lattice QCD Study of Anomalous Transport Phenomena in Strongly Interacting Matter

    hep-lat 2025-09 conditional novelty 8.0 of 10

    First physical-point lattice QCD calculation of the Chiral Separation Effect conductivity, a zero equilibrium Chiral Magnetic Effect with conserved currents, and a localized equilibrium CME in inhomogeneous fields.

  2. Leading-Order QCD Equation of State in Strong Magnetic Fields at Nonzero Baryon Chemical Potential

    hep-lat 2025-08 conditional novelty 6.0 of 10

    Continuum-estimated leading-order EoS coefficients in magnetized strangeness-neutral QCD at nonzero baryon chemical potential show temperature-band crossings in q1 and P2 and a possible sign change of the trace anomal...

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