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Non-hermitian quantum thermodynamics

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arxiv 1511.06256 v2 pith:DO5KAWD3 submitted 2015-11-19 quant-ph cond-mat.stat-mechmath-phmath.MP

Non-hermitian quantum thermodynamics

classification quant-ph cond-mat.stat-mechmath-phmath.MP
keywords quantumnon-hermitianthermodynamicsequalitysecondanalyzeappeararbitrarily
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Thermodynamics is the phenomenological theory of heat and work. Here we analyze to what extent quantum thermodynamic relations are immune to the underlying mathematical formulation of quantum mechanics. As a main result, we show that the Jarzynski equality holds true for all non-hermitian quantum systems with real spectrum. This equality expresses the second law of thermodynamics for isothermal processes arbitrarily far from equilibrium. In the quasistatic limit however, the second law leads to the Carnot bound which is fulfilled even if some eigenenergies are complex provided they appear in conjugate pairs. Furthermore, we propose two setups to test our predictions. Namely with strongly interacting excitons and photons in a semiconductor microcavity and in the non-hermitian tight-binding model.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Kubo-Martin-Schwinger conditions for non-Hermitian systems

    quant-ph 2026-06 unverdicted novelty 7.0

    Positivity of the biorthogonal Gibbs functional characterizes quasi-Hermiticity for diagonalisable non-Hermitian operators with real spectra, and the resulting state satisfies the three analytic KMS conditions.

  2. Kubo-Martin-Schwinger conditions for non-Hermitian systems

    quant-ph 2026-06 unverdicted novelty 7.0

    For any diagonalisable non-Hermitian H with real spectrum, the biorthogonal Gibbs functional satisfies positivity of ω_bi(A†A) for all A if and only if H is quasi-Hermitian.

  3. Holographic Dual of PT Symmetric BCFT

    hep-th 2026-06 unverdicted novelty 6.0

    Holographic dual of PT-symmetric BCFT via imaginary scalar on EOW brane shows spontaneous PT breaking and enhanced entanglement entropy growth in quenched state.