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Towards a Relativistic KMS Condition

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abstract

It is shown that, under quite general conditions, thermal correlation functions in relativistic quantum field theory have stronger analyticity properties in configuration space than those imposed by the KMS-condition. These analyticity properties may be understood as a remnant of the relativistic spectrum condition in the vacuum sector and lead to a Lorentz-covariant formulation of the KMS-condition involving all space-time variables.

years

2026 1 2025 1

verdicts

UNVERDICTED 2

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Response theory for quantum fields in isolation

quant-ph · 2026-04-15 · unverdicted · novelty 2.0

A review of response theory formalism for isolated quantum fields emphasizing causality, functional techniques, and fluctuation-dissipation relations.

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