Three-Dimensional Black Holes and Liouville Field Theory
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概要
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A quantization of (2+1)-dimensional gravity with negative cosmological constant is presented, and it is used to study quantum aspects of (2+1)-dimensional black holes. The quantization consists of two procedures. One is related with quantization of the asymptotic Virasoro symmetry. The concept of the Virasoro deformation of 3-geometry is introduced. For a given black hole, the deformation of the exterior of the outer horizon is identified with a product of the appropriate coadjoint orbits of the Virasoro groups <diffS^1>^^^^_±. Its quantization provides unitary irreducible representations of the Virasoro algebra, in which the state of the black hole becomes primary. To make the quantization complete, holonomies, the global degrees of freedom, are taken into account. By an identification of these topological operators with zero modes of the Liouville field, the aforementioned unitary representations are shown, as long as c≫1, to be the Hilbert space of this two-dimensional conformal field theory. This conformal field theory, living on the cylinder at infinity of the black hole and having continuous spectra, can recognize the outer horizon only as a one-dimensional object in SL_2(R) and realize it as insertions of the corresponding vertex operator. Therefore it cannot be a conformal field theory on the horizon. Two possible descriptions of the horizon conformal field theory are proposed.
- 理論物理学刊行会の論文
- 1999-10-25
著者
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UMETSU Hiroshi
Department of Physics, Osaka University
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Umetsu Hiroshi
Department Of Physics Graduate School Of Science Tohoku University
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Umetsu Hiroshi
Department Of Physics Osaka University
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Yokoi Naoto
Department Of Physics Osaka University
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NAKATSU Toshio
Department of Physics, Graduate School of Science, Osaka University
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Nakatsu T
Department Of Physics Graduate School Of Science Osaka University
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Nakatsu Toshio
Department Of Physics Graduate School Of Scienc Osaka University
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YOKOI Naoto
Department of Physics, Osaka University
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Umetsu Hiroshi
Department of Physics,Osaka University
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