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- W2124132065 abstract "The AdS/CFT correspondence is currently one of the most actively studied topics in theoretical high energy physics. The correspondence is a conjecture about the equivalence of string theory on an asymptotically anti-de Sitter (AdS) spacetime and a lower-dimensional conformal field theory (CFT) on the boundary of AdS. This kind of equivalence could help us to deepen our understanding of many aspects of the two strikingly different theories. In particular, the correspondence could shed light on the quantum physics of black holes. This thesis focuses on two themes concerning the AdS black holes. In the first part, we address semiclassical features of black holes in the AdS spacetimes. We consider different approaches to Hawking radiation, and aspects of black hole thermodynamics. In the latter part of the thesis we study the spectrum of bosonic string theory on the (2 + 1)-dimensional AdS black hole (the BTZ black hole). Strings on the BTZ black hole are described by a Wess–Zumino–Witten model on a quotient of the SL(2,R) group manifold. The corresponding SL(2,R) Lie algebra is given in the so-called hyperbolic basis. The SL(2,R) WZW model has a symmetry known as the spectral flow which relates string states with different winding numbers. Maldacena and Ooguri have shown recently how the spectral flow solves the problem with the unphysical states that appear in the spectrum of the SL(2,R) WZW model. We show how to implement the spectral flow in the hyperbolic basis. Finally, we discuss the spectral flow in the context of a free field realization of the SL(2,R) current algebra." @default.
- W2124132065 created "2016-06-24" @default.
- W2124132065 creator A5085626364 @default.
- W2124132065 date "2004-05-01" @default.
- W2124132065 modified "2023-09-26" @default.
- W2124132065 title "Aspects of Quantum Fields and Strings on AdS Black Holes" @default.
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