TY - JOUR
T1 - On thermodynamical properties of some coset CFT backgrounds
AU - Giveon, Amit
AU - Konechny, Anatoly
AU - Rabinovici, Eliezer
AU - Sever, Amit
PY - 2004/7/1
Y1 - 2004/7/1
N2 - 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.
AB - 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.
KW - Black Holes in String Theory
KW - Conformal Field Models in String Theory
UR - http://www.scopus.com/inward/record.url?scp=23044515456&partnerID=8YFLogxK
U2 - 10.1088/1126-6708/2004/07/076
DO - 10.1088/1126-6708/2004/07/076
M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???
AN - SCOPUS:23044515456
SN - 1029-8479
VL - 8
SP - 1929
EP - 1961
JO - Journal of High Energy Physics
JF - Journal of High Energy Physics
IS - 7
ER -