2017/11/04 by Kenji Fukushima, Yoshimasa Hidaka · 1 citation
Earth and Planetary Sciences · Physics and Astronomy · #Condensed matter physics #Electric field #Electrical resistivity and conductivity #High-Energy Particle Collisions Research #High-pressure geophysics and materials #Kinetic energy #Landau quantization #Magnetic field #Particle physics #Physics #Quantum chromodynamics #Quantum electrodynamics #Quantum mechanics #Quantum, superfluid, helium dynamics #Quark #Quark–gluon plasma #Resummation #cond-mat.str-el #hep-ph
paper · pdf · doi:10.1103/physrevlett.120.162301
published as Phys. Rev. Lett. 120, 162301 (2018) · 5 pages, 5 figures
arxiv created 2017/11/04 · openalex publication_date 2018/04/17 · arxiv updated 2018/04/25 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We compute the electric conductivity of quark matter at finite temperature T and a quark chemical potential \ensuremathμ under a magnetic field B beyond the lowest Landau level approximation. The electric conductivity transverse to B is dominated by the Hall conductivity \ensuremathσH. For the longitudinal conductivity \ensuremathσ_\ensuremath∥, we need to solve kinetic equations. Then, we numerically find that \ensuremathσ_\ensuremath∥ has only a mild dependence on \ensuremathμ and the quark mass mq. Moreover, \ensuremathσ_\ensuremath∥ first decreases and then linearly increases as a function of B, leading to an intermediate B region that looks consistent with the experimental signature for the chiral magnetic effect. We also point out that \ensuremathσ_\ensuremath∥ at a nonzero B remains within the range of the lattice-QCD estimate at B=0.