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Non-Hermitian Chiral Magnetic Effect in Equilibrium

Abstract : We analyze the Chiral Magnetic Effect for non-Hermitian fermionic systems using the biorthogonal formulation of quantum mechanics. In contrast to the Hermitian chiral counterparts, we show that the Chiral Magnetic Effect may take place in thermal equilibrium of an open non-Hermitian system with, generally, massive fermions. The key observation is that for non-Hermitian charged systems, there is no strict charge conservation as understood in the Hermitian case, so the Bloch theorem preventing currents in the thermodynamic limit in equilibrium does not apply.
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https://hal.archives-ouvertes.fr/hal-01987232
Contributor : Maxim Chernodub <>
Submitted on : Monday, November 9, 2020 - 7:33:44 PM
Last modification on : Saturday, December 26, 2020 - 1:46:10 PM
Long-term archiving on: : Wednesday, February 10, 2021 - 7:57:15 PM

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M. N. Chernodub, Alberto Cortijo. Non-Hermitian Chiral Magnetic Effect in Equilibrium. Symmetry, MDPI, 2020, 12 (5), pp.761. ⟨10.3390/sym12050761⟩. ⟨hal-01987232⟩

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