3D Gravity, Point Particles and Liouville Theory

Details 3D Gravity, Point Particles and Liouville Theory 3D Gravity, Point Particles and Liouville Theory

2000-08-31

arxiv.org/abs/hep-th/0008253v2

Class.Quant.Grav. 18 (2001) 1291-1304

Physics

High Energy Physics

High Energy Physics - Theory

17 pages, 3 figures, references added

Scientific paper

10.1088/0264-9381/18/7/311

This paper elaborates on the bulk/boundary relation between negative cosmological constant 3D gravity and Liouville field theory (LFT). We develop an interpretation of LFT non-normalizable states in terms of particles moving in the bulk. This interpretation is suggested by the fact that ``heavy'' vertex operators of LFT create conical singularities and thus should correspond to point particles moving inside AdS. We confirm this expectation by comparing the (semi-classical approximation to the) LFT two-point function with the (appropriately regularized) gravity action evaluated on the corresponding metric.

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