Exact generalized partition function of 2D CFTs at large central charge

Anatoly Dymarsky, Kirill Pavlenko

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

We discuss generalized partition function of 2d CFTs on thermal cylinder decorated by higher qKdV charges. We propose that in the large central charge limit qKdV charges factorize such that generalized partition function can be rewritten in terms of auxiliary non-interacting bosons. The explicit expression for the generalized free energy is readily available in terms of the boson spectrum, which can be deduced from the conventional thermal expectation values of qKdV charges. In other words, the picture of the auxiliary non-interacting bosons allows extending thermal one-point functions to the full non-perturbative generalized partition function. We verify this conjecture for the first seven qKdV charges using recently obtained pertrubative results and find corresponding contributions to the auxiliary boson masses. We further extend these results by conjecturing the full spectrum of bosons and find an exact expression for the generalized partition function as a function of infinite tower of chemical potentials in the limit of large central charge.

Original languageEnglish
Article number77
JournalJournal of High Energy Physics
Volume2019
Issue number5
DOIs
StatePublished - May 1 2019

Bibliographical note

Publisher Copyright:
© 2019, The Author(s).

Keywords

  • Conformal Field Theory
  • Conformal and W Symmetry
  • Integrable Field Theories

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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