Two-Loop Self-Energy and Multiple Scattering at Finite Temperature

Details Two-Loop Self-Energy and Multiple Scattering at Finite Temperature Two-Loop Self-Energy and Multiple Scattering at Finite Temperature

2001-03-09

arxiv.org/abs/hep-th/0103065v2

Phys.Rev. D64 (2001) 045008

Physics

High Energy Physics

High Energy Physics - Theory

15 pages including 7 figures; v2. with appendix added, accepted by PRD

Scientific paper

10.1103/PhysRevD.64.045008

One and two loop self-energies are worked out explicitly for a heavy scalar
field interacting weakly with a light self-interacting scalar field at finite
temperature. The ring/daisy diagrams and a set of necklace diagrams can be
summed simultaneously. This simple model serves to illustrate the connection
between multi-loop self-energy diagrams and multiple scattering in a medium.

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