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arXiv · 2105.10271

Positive magnetoresistance induced by hydrodynamic fluctuations in chiral media

Noriyuki Sogabe·Naoki Yamamoto·Yi Yin
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Abstract

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.

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Noriyuki Sogabe, Naoki Yamamoto, Yi Yin. 2021-05-21. Positive magnetoresistance induced by hydrodynamic fluctuations in chiral media. https://doi.org/10.1007/jhep09(2021)131

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