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Positive magnetoresistance induced by hydrodynamic fluctuations in chiral media

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 نشر من قبل Noriyuki Sogabe
 تاريخ النشر 2021
  مجال البحث فيزياء
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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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