The plasmon puzzle in perturbative thermal QCD

Sudhir Nadkarni

Physica A: Statistical Mechanics and its Applications, 1989, vol. 158, issue 1, 226-234

Abstract: An appealing explanation for the diverse non-perturbative phenomena that exist in the deconfined phase of high-temperature quantum chromodynamics is the hypothesis that the perturbative vacuum is unstable on a large scale. Colour plasma oscillations about such a false vacuum should display a negative decay rate. However, various calculations of this rate disagree as to both magnitude and sign. Here, these calculations are examined critically, their discrepancies resolved and a viable non-Abelian linear-response formalism identified. It is shown that a physically meaningful calculation of the plasmon decay rate must necessarily include non-perturbative information, which could make the stability issue undecidable in perturbation theory.

Date: 1989
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:158:y:1989:i:1:p:226-234

DOI: 10.1016/0378-4371(89)90523-2

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