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arxiv: hep-ph/9509333 · v1 · submitted 1995-09-19 · ✦ hep-ph

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The Plasmon in Hot φ⁴ Theory

Enke Wang , Ulrich Heinz
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classification ✦ hep-ph
keywords plasmonpropagatorspectraltheorywidthalongaroundaxis
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We study the 2-loop resummed propagator in hot $g^2\phi^4$ theory. The propagator has a cut along the whole real axis in the complex energy plane, but for small $g$, the spectral density is sharply peaked around the plasmon. The dispersion relation and the width of the plasmon are calculated at zero {\em and} finite momentum. At large momenta the spectral width vanishes, and the plasmon looses its collectivity and behaves like a non-interacting free particle.

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

  1. Emergent chiral spin symmetry, non-perturbative dynamics and thermoparticles in hot QCD

    hep-ph 2025-12 unverdicted novelty 3.0

    Lattice data indicate hot QCD features an intermediate phase with emergent chiral spin symmetry and thermoparticles as thermal constituents, differing from perturbative expectations.