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Spectral functions at nonzero temperature

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arxiv 2504.05383 v1 pith:XNSGXHNF submitted 2025-04-07 hep-th hep-lathep-ph

V. P. Nair , Robert D. Pisarski This is my paper · ORCID
classification hep-thhep-lathep-ph
keywords fieldnonzerospectraltemperatureassumingbrosbuchholzderivation
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We present a straightforward derivation of the spectral representation of a scalar field at nonzero temperature, assuming that the field is relativistically invariant in vacuum. This form was first derived by Bros and Buchholz.

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  1. Resonances at finite temperature from the lattice

    hep-lat 2026-07 conditional novelty 7.0 of 10

    Thermoparticle states are used to generalize the two-particle finite-volume quantization condition to finite temperature, keeping the kinematic function finite at all real energies and opening a route to thermal reson...

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