Volume 142, Number 3, May 2023
|Number of page(s)||6|
|Published online||12 May 2023|
False Onsager relations
NEST, Istituto Nanoscienze-CNR and Scuola Normale Superiore - I-56127 Pisa, Italy
(a) E-mail: email@example.com (corresponding author)
Received: 4 January 2023
Accepted: 25 April 2023
Recent research suggests that when a system has a “false time-reversal violation” the Onsager reciprocity relations hold despite the presence of a magnetic field. The purpose of this work is to clarify that the Onsager relations may well be violated in the presence of a “false time-reversal violation”: that rather guarantees the validity of distinct relations, which we dub “false Onsager relations”. We also point out that for quantum systems “false time-reversal violation” is omnipresent and comment that, per se, this has in general no consequence in regard to the validity of Onsager relations, or the more general non-equilibrium fluctuation relations, in the presence of a magnetic field. Our arguments are illustrated with the Heisenberg model of a magnet in an external magnetic field.
© 2023 The author(s)
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