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


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 find 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)102-115
Number of pages14
JournalFortschritte der Physik
Issue number2-3
StatePublished - Feb 2006


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