Positive magnetoresistance induced by hydrodynamic fluctuations in chiral media

2021/05/31 by Noriyuki Sogabe, Naoki Yamamoto, Yi Yin
Earth and Planetary Sciences · Mathematics · Medicine · Physics and Astronomy · #Condensed matter physics #Conductivity #Field (mathematics) #Geophysical and Geoelectrical Methods #High-Energy Particle Collisions Research #Longitudinal field #Magnetic field #Magnetoresistance #Mathematics #Medicine #Physics #Quantum mechanics #Quantum, superfluid, helium dynamics #Relaxation (psychology) #cond-mat.str-el #hep-ph #hep-th #nucl-th

paper · pdf · doi:10.1007/jhep09(2021)131

31 pages, 3 figures, published version

openalex publication_date 2021/09/21 · arxiv created 2021/09/23 · arxiv updated 2021/09/24 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

A bstract We analyze the combined effects of hydrodynamic fluctuations and chiral magnetic effect (CME) for a chiral medium in the presence of a background magnetic field. Based on the recently developed non-equilibrium effective field theory, we show fluctuations give rise to a CME-related positive contribution to magnetoresistance, while the early studies without accounting for the fluctuations find a CME-related negative magnetoresistance. At zero axial relaxation rate, the fluctuations contribute to the transverse conductivity in addition to the longitudinal one.

Citations

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