• DOI:10.1103/PhysRevD.65.105005
• Corpus ID: 18552062

Renormalization of self-consistent approximation schemes at finite temperature. II. Applications to the sunset diagram

@article{Hees2001RenormalizationOS,
  title={Renormalization of self-consistent approximation schemes at finite temperature. II. Applications to the sunset diagram},
  author={Hendrik van Hees and Joern Knoll},
  journal={Physical Review D},
  year={2001},
  volume={65},
  pages={105005}
}

• H. Hees, J. Knoll
• Published 15 November 2001
• Physics
• Physical Review D

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 $\phi^4$-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 $\Phi$-derivable approximation or 2PI effective action concept.