Form factor expansion for thermal correlators

B. Pozsgay, G. Takács

Research output: Contribution to journalArticle

31 Citations (Scopus)


We consider finite temperature correlation functions in massive integrable quantum field theory. Using a regularization by putting the system in finite volume, we develop a novel approach (based on multi-dimensional residues) to the form factor expansion for thermal correlators. The first few terms are obtained explicitly in theories with diagonal scattering. We also discuss the validity of the LeClair-Mussardo proposal.

Original languageEnglish
Article numberP11012
JournalJournal of Statistical Mechanics: Theory and Experiment
Issue number11
Publication statusPublished - Nov 1 2010


  • Correlation functions
  • Form factors
  • Integrable quantum field theory

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Statistics and Probability
  • Statistics, Probability and Uncertainty

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