On thermodynamical properties of some coset CFT backgrounds

Amit Giveon*, Anatoly Konechny, Eliezer Rabinovici, Amit Sever

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


We investigate the thermodynamical features of two lorentzian signature backgrounds that arise in string theory as exact CFTs and possess more than two disconnected asymptotic regions: the 2-d charged black hole and the Nappi-Witten cosmological model. We find multiple smooth disconnected euclidean versions of the charged black hole background. They are characterized by different temperatures and electro-chemical potentials. We show that there is no straightforward analog of the Hartle-Hawking state that would express these thermodynamical features. We also obtain multiple euclidean versions of the Nappi-Witten cosmological model and study their singularity structure. It suggests to associate a non-isotropic temperature with this background.

Original languageAmerican English
Pages (from-to)1929-1961
Number of pages33
JournalJournal of High Energy Physics
Issue number7
StatePublished - 1 Jul 2004


  • Black Holes in String Theory
  • Conformal Field Models in String Theory


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