Spectral functions at nonzero temperature

2025/04/07 by V. P. Nair, Robert D. Pisarski, Nair, V. P. +1 · 1 citation
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #High Energy Physics - Phenomenology (hep-ph) #High Energy Physics - Theory (hep-th) #Quantum and Classical Electrodynamics

paper · pdf · doi:10.48550/arxiv.2504.05383

openalex publication_date 2025/04/07 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

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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• Goldstone bosons across thermal phase transitions

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