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Langevin description of gauged scalar fields in a thermal bath

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arxiv 1308.4794 v2 pith:BRJ4HRLM submitted 2013-08-22 hep-ph astro-ph.COhep-th

Yuhei Miyamoto , Hayato Motohashi , Teruaki Suyama , Jun'ichi Yokoyama This is my paper
classification hep-phastro-ph.COhep-th
keywords dissipationscalarbathfieldgaugedlangevinnoiseterms
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We study the dynamics of the oscillating gauged scalar field in a thermal bath. A Langevin type equation of motion of the scalar field, which contains both dissipation and fluctuation terms, is derived by using the real-time finite temperature effective action approach. The existence of the quantum fluctuation-dissipation relation between the non-local dissipation term and the Gaussian stochastic noise terms is verified. We find the noise variables are anti-correlated at equal-time. The dissipation rate for the each mode is also studied, which turns out to depend on the wavenumber.

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Cited by 2 Pith papers

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

  1. Thermal Alignment as a Pathway to Axion Dark Matter

    hep-ph 2026-08 reject novelty 7.0 of 10

    A thermal bath that damps an axion also imprints fluctuations, and this paper derives a covariance bound plus a gauge model in which one transition determines the late axion phase space as dark matter.

  2. Gauging Open EFTs from the top down

    hep-th 2025-12 unverdicted novelty 6.0 of 10

    Derives gauge-invariant influence functionals for photons and Stueckelberg fields in open U(1) gauge EFTs via BRST on the in-in contour after integrating out matter.

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