Exact correlation functions in the Brownian Loop Soup

Federico Camia, Valentino F. Foit, Alberto Gandolfi, Matthew Kleban

Research output: Contribution to journalArticlepeer-review


We compute analytically and in closed form the four-point correlation function in the plane, and the two-point correlation function in the upper half-plane, of layering vertex operators in the two dimensional conformally invariant system known as the Brownian Loop Soup. These correlation functions depend on multiple continuous parameters: the insertion points of the operators, the intensity of the soup, and the charges of the operators. In the case of the four-point function there is non-trivial dependence on five continuous parameters: the cross-ratio, the intensity, and three real charges. The four-point function is crossing symmetric. We analyze its conformal block expansion and discover a previously unknown set of new conformal primary operators.

Original languageEnglish (US)
Article number67
JournalJournal of High Energy Physics
Issue number7
StatePublished - Jul 1 2020


  • Conformal Field Theory
  • Integrable Field Theories
  • Random Systems
  • Stochastic Processes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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