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Resummation in a hot scalar field theory

Rajesh R. Parwani*

  • Institute for Theoretical Physics, State University of New York at Stony Brook, Stony Brook, New York 11794-3840

  • *Address after September 1, 1992: Service de Physique Theorique de Saclay, 91191 Gif-sur-Yvette Cedex, France.

Phys. Rev. D 45, 4695 – Published 15 June, 1992Erratum Phys. Rev. D 48, 5965 (1993)

DOI: https://doi.org/10.1103/PhysRevD.45.4695

Abstract

A resummed perturbative expansion is used to obtain the self-energy in the high-temperature g2φ4 field-theory model up to order g4. From this the zero-momentum pole of the effective propagator is evaluated to determine the induced thermal mass and damping rate for the bosons in the plasma to order g3. The calculations are performed in the imaginary-time formalism and a simple diagrammatic analysis is used to identify the relevant diagrams at each order. Results are compared with similar real-time calculations found in the literature.

Erratum

Erratum: Resummation in a hot scalar field theory

Rajesh R. Parwani
Phys. Rev. D 48, 5965 (1993)

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