Renormalization of selfconsistent approximation schemes. 2. Applications to the sunset diagram
Nov, 200117 pages
Published in:
- Phys.Rev.D 65 (2002) 105005
e-Print:
- hep-ph/0111193 [hep-ph]
Report number:
- GSI-PREPRINT-2001-31
View in:
Citations per year
Abstract:
The theoretical concepts for the renormalization of self-consistent Dyson resummations, deviced in the first paper of this series, are applied to first example cases for the -theory. Besides the tadpole (Hartree) approximation as a novel part the numerical solutions are presented which includes the sunset self-energy diagram into the self-consistent scheme based on the -derivable approximation or 2PI effective action concept.- 11.10.Wx
- 11.10.Gh
- phi**n model: 4
- renormalization
- propagator
- finite temperature
- effective action
- Feynman graph: higher-order
- numerical calculations
References(20)
Figures(0)