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  Effective Stringy Description of Schwarzschild Black Holes

Krasnov, K., & Solodukhin, S. N. (2004). Effective Stringy Description of Schwarzschild Black Holes. Advances in Theoretical and Mathematical Physics, 8(3), 421-460. Retrieved from http://www.intlpress.com/journals/ATMP/archive/2004/ATMP_8_421_460.pdf.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-5109-3 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-510A-1
Genre: Journal Article

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Krasnov, Kirill1, Author
Solodukhin, Sergey N., Author
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1Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_24014              

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 Abstract: We start by pointing out that certain Riemann surfaces appear rather naturally in the context of wave equations in the black hole background. For a given black hole there are two closely related surfaces. One is the Riemann surface of complexified ``tortoise'' coordinate. The other Riemann surface appears when the radial wave equation is interpreted as the Fuchsian differential equation. We study these surfaces in detail for the BTZ and Schwarzschild black holes in four and higher dimensions. Topologically, in all cases both surfaces are a sphere with a set of marked points; for BTZ and 4D Schwarzschild black holes there is 3 marked points. In certain limits the surfaces can be characterized very explicitly. We then show how properties of the wave equation (quasi-normal modes) in such limits are encoded in the geometry of the corresponding surfaces. In particular, for the Schwarzschild black hole in the high damping limit we describe the Riemann surface in question and use this to derive the quasi-normal mode frequencies with the log(3) as the real part. We then argue that the surfaces one finds this way signal an appearance of an effective string. We propose that a description of this effective string propagating in the black hole background can be given in terms of the Liouville theory living on the corresponding Riemann surface. We give such a stringy description for the Schwarzschild black hole in the limit of high damping and show that the quasi-normal modes emerge naturally as the poles in 3-point correlation function in the effective conformal theory.

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Language(s): eng - English
 Dates: 2004
 Publication Status: Published in print
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Title: Advances in Theoretical and Mathematical Physics
Source Genre: Journal
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Pages: - Volume / Issue: 8 (3) Sequence Number: - Start / End Page: 421 - 460 Identifier: -