Charged black holes in two-dimensional string theory

McGuigan, Michael; Nappi, Chiara R.; Yost, S. A.

doi:10.1016/0550-3213(92)90039-e

Cited by 151 publications

(282 citation statements)

References 42 publications

(95 reference statements)

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“…The twodimensional black holes in question were derived by McGuigan, Nappi and Yost [23], and in a different form by Gibbons and Perry [24], from the heterotic string target-space action (with α ′ = 1):…”

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confidence: 99%

Statistical entropy of charged two-dimensional black holes

Teo

1998

Physics Letters B

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The statistical entropy of a five-dimensional black hole in Type II string theory was recently derived by showing that it is U-dual to the three-dimensional Bañados-Teitelboim-Zanelli black hole, and using Carlip's method to count the microstates of the latter. This is valid even for the non-extremal case, unlike the derivation which relies on D-brane techniques.In this letter, I shall exploit the U-duality that exists between the five-dimensional black hole and the two-dimensional charged black hole of McGuigan, Nappi and Yost, to microscopically compute the entropy of the latter. It is shown that this result agrees with previous calculations using thermodynamic arguments.

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confidence: 99%

Statistical entropy of charged two-dimensional black holes

Teo

1998

Physics Letters B

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“…In string vacua corresponding to "left-right symmetric" supersymmetric quotients we do not expect such corrections to the metric [13,14,15,16,11,12]. 3 …”

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confidence: 99%

“…This background is a 2-d CBH with mass M and charge Q -the one discovered and studied in [3]. The inner (Cauchy) and outer (event) horizons are located at r = r ± , and the singularity is located at r = 0.…”

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confidence: 99%

“…The enhanced symmetry is due to the existence of two extra free fermions -ψ φ and ψ t -which together with the 22 λ's now give rise to these enlarged gauge groups. In this case, the one loop partition function of a 2-d heterotic string with a diagonal GSO projection was computed in [3]. For the SO(24) string it is the modular invariant function where λ I are the 24 free fermions constituting the SO(24) "internal space."…”

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confidence: 99%

“…We begin in section 2 by reviewing the 2-d Charged Black Holes corresponding to a family of exact CFTs -the (left-right asymmetric) quotients SL(2,IR)×U (1) U(1) [3,4,2,5,6,7]. In section 3 we consider the extremal case, and show that its corresponding exact CFT -the maximally asymmetric quotient -captures the near horizon physics, and is equivalent to an AdS 2 background with a gauge field.…”

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confidence: 99%

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Strings in a 2-d Extremal Black Hole

Giveon

Sever

2005

J. High Energy Phys.

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String theory on 2-d charged black holes corresponding to SL(2)×U(1) L U(1)exact asymmetric quotient CFTs are investigated. These backgrounds can be embedded, in particular, in a two dimensional heterotic string. In the extremal case, the quotient CFT description captures the near horizon physics, and is equivalent to strings in AdS 2 with a gauge field. Such string vacua possess an infinite space-time Virasoro symmetry, and hence enhancement of global space-time Lie symmetries to affine symmetries, in agreement with the conjectured AdS 2 /CF T 1 correspondence. We argue that the entropy of these 2-d black holes in string theory is compatible with semi-classical results, and show that in perturbative computations part of an incoming flux is absorbed by the black hole. Moreover, on the way we find evidence that the 2-d heterotic string is closely related to the N = (2, 1) string, and conjecture that they are dual [1]. 07/04

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Dilaton-Maxwell Gravity with Matter Near Two Dimensions

Elizalde

Odintsov

1996

Fortschr. Phys.

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Unlike Einstein gravity, dilaton-Maxwell gravity with matter is renormalizable in 2 + ǫ dimensions and has a smooth ǫ → 0 limit. By performing a renormalization-group study of this last theory we show that the gravitational coupling constant G has a non-trivial, ultraviolet stable fixed point (asymptotic freedom) and that the dilatonic coupling functions (including the dilatonic potential) exhibit also a real, non-trivial fixed point. At such point the theory represents a standard charged string-inspired model. Stability and gauge dependence of the fixed-point solution is discussed. It is shown that all these properties remain valid in a dilatonic-Yang-Mills theory with n scalars and m spinors, that has the UF stable fixed point G * = 3ǫ(48 + 12N − m − 2n) −1 . In addition, it is seen that by increasing N (number of gauge fields) the matter central charge C = n + m/2 (0 < C < 24 + 6N) can be increased correspondingly (in pure dilatonic gravity 0 < C < 24).

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Charged black holes in two-dimensional string theory

Abstract: 2016-12-26T14:59:35

Cited by 151 publications

References 42 publications

Statistical entropy of charged two-dimensional black holes

Statistical entropy of charged two-dimensional black holes

Strings in a 2-d Extremal Black Hole

Dilaton-Maxwell Gravity with Matter Near Two Dimensions

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