Two and three-point functions in Liouville theory

Details Two and three-point functions in Liouville theory Two and three-point functions in Liouville theory

1994-03-23

arxiv.org/abs/hep-th/9403141v3

Nucl.Phys. B429 (1994) 375-388

Physics

High Energy Physics

High Energy Physics - Theory

15 pages, Latex, Revised version: A sign error in formula (50) is corrected

Scientific paper

10.1016/0550-3213(94)00352-1

Based on our generalization of the Goulian-Li continuation in the power of the 2D cosmological term we construct the two and three-point correlation functions for Liouville exponentials with generic real coefficients. As a strong argument in favour of the procedure we prove the Liouville equation of motion on the level of three-point functions. The analytical structure of the correlation functions as well as some of its consequences for string theory are discussed. This includes a conjecture on the mass shell condition for excitations of noncritical strings. We also make a comment concerning the correlation functions of the Liouville field itself.

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