Positive magnetoresistance induced by hydrodynamic fluctuations in chiral media
arXiv:2105.10271 · doi:10.1007/JHEP09(2021)131
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.
31 pages, 3 figures, published version
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Cited by in corpus (5)
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- Off-equilibrium non-Gaussian fluctuations near the QCD critical point: an effective field theory perspective
- Holographic Schwinger-Keldysh field theory of SU(2) diffusion
- Long-time tails in the SYK chain from the effective field theory with a large number of derivatives