1992/04/10 by Rajesh R. Parwani · 8 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Boson #Cosmology and Gravitation Theories #Diagrammatic reasoning #Effective field theory #Formalism (music) #High-Energy Particle Collisions Research #Mathematical physics #Particle physics #Physics #Propagator #Quantum #Quantum chromodynamics #Quantum electrodynamics #Quantum field theory #Quantum gravity #Quantum mechanics #Resummation #Scalar (mathematics) #Scalar field #Scalar field theory #Thermal quantum field theory #hep-ph
paper · pdf · doi:10.1103/physrevd.45.4695
published as Phys.Rev.D45:4695,1992; Erratum-ibid.D48:5965,1993; Phys.Rev.D48:5965,1993 · 26 pages (figures not included)
arxiv created 1992/04/10 · openalex publication_date 1992/06/15 · arxiv updated 2014/11/17 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
A resummed perturbative expansion is used to obtain the self-energy in the high-temperature g2\ensuremathφ4 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.