Analytic continuation of thermal N-point functions from imaginary to real energies.

Thermal [ital n]-point Green functions in the framework of quantum field theory at finite temperature are considered. We reanalyze how analytic continuations from imaginary to real energies relate these functions originally defined in the imaginary-time formalism to retarded and advanced realtime ones. We described a new and rather simple method which is valid to all orders of perturbation theory and which has the further advantage that it is independent of approximations often applied in actual finite-order calculations.

• Publication year

  1993

• Venue

  Physical Review D, Particles and fields

• Publication date

  1993-07-29

• Fields of study

  Medicine, Physics

• Identifiers
  DOI 10.1103/PhysRevD.49.4107arXiv hep-ph/9307362PMID 10017416
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

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