Positive magnetoresistance induced by hydrodynamic fluctuations in chiral media

Junio 10, 2021
De 10:00am hasta 11:00am

IFT Zoom webinar

Specialist level
Noriyuki Sogabe
Institute of Modern Physics, Lanzhou, China

IFT Zoom webinar


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.