Freiburg 2008 – wissenschaftliches Programm
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GR: Fachverband Gravitation und Relativitätstheorie
GR 9: Quantengravitation und Quantenkosmologie
GR 9.2: Vortrag
Mittwoch, 5. März 2008, 18:25–18:45, KGI-HS 1010
Boundary Terms in Two-Dimensional Dilaton Gravity — •René Meyer1, Luzi Bergamin2, Daniel Grumiller3, and Robert McNees4 — 1Max-Planck-Institut für Physik, München, Germany — 2ESA Advanced Concepts Team, ESTEC, The Netherlands — 3Massachusetts Institute of Technology, Cambridge, MA, USA — 4Perimeter Institute for Theoretical Physics, Waterloo, Canada
We present recent results concerning the role of boundary terms in two-dimensional dilaton gravity (see hep-th/0703230, 0710.4140, 0711.3595). In the first part of this talk we construct the essentially unique Hamilton-Jacobi counterterm, which is necessary to ensure a well-defined semiclassical approximation and has applications in black hole thermodynamics as well as in holographic renormalization in the AdS/CFT correspondence. In the second part we outline the proof of quantum triviality of dilaton gravity models in two dimensions with a spacelike boundary, applying the path integral quantization method first developed by the "Vienna School" around Wolfgang Kummer.