TY - JOUR

T1 - The charged black hole/string transition

AU - Giveon, Amit

AU - Kutasov, David

PY - 2006

Y1 - 2006

N2 - We generalize the discussion of [1] to charged black holes. For the two dimensional charged black hole, which is described by an exactly solvable worldsheet theory, a transition from the black hole to the string phase occurs when the Hawking temperature of the black hole reaches a limiting value, the temperature of free strings with the same mass and charge. At this point a tachyon winding around euclidean time in the euclidean black hole geometry, which has a non-zero condensate, becomes massless at infinity, and the horizon of the black hole is infinitely smeared. For Reissner-Nordström black holes in d 4 dimensions, the exact worldsheet CFT is not known, but we propose that it has similar properties. We check that the leading order solution is in good agreement with this proposal, and discuss the expected form of α′ corrections.

AB - We generalize the discussion of [1] to charged black holes. For the two dimensional charged black hole, which is described by an exactly solvable worldsheet theory, a transition from the black hole to the string phase occurs when the Hawking temperature of the black hole reaches a limiting value, the temperature of free strings with the same mass and charge. At this point a tachyon winding around euclidean time in the euclidean black hole geometry, which has a non-zero condensate, becomes massless at infinity, and the horizon of the black hole is infinitely smeared. For Reissner-Nordström black holes in d 4 dimensions, the exact worldsheet CFT is not known, but we propose that it has similar properties. We check that the leading order solution is in good agreement with this proposal, and discuss the expected form of α′ corrections.

KW - Black Holes in String Theory

KW - Conformal Field Models in String Theory

KW - Superstrings and Heterotic Strings

UR - http://www.scopus.com/inward/record.url?scp=33645509273&partnerID=8YFLogxK

U2 - 10.1088/1126-6708/2006/01/120

DO - 10.1088/1126-6708/2006/01/120

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AN - SCOPUS:33645509273

SN - 1029-8479

SP - 3071

EP - 3085

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 1

ER -