On touching random surfaces, two-dimensional quantum gravity and non-critical string theory

Details On touching random surfaces, two-dimensional quantum gravity and non-critical string theory On touching random surfaces, two-dimensional quantum gravity and non-critical string theory

1997-10-14

arxiv.org/abs/hep-th/9710107v1

Phys.Rev. D57 (1998) 3725-3735

Physics

High Energy Physics

High Energy Physics - Theory

22 pages, Latex2e, 3 figures

Scientific paper

10.1103/PhysRevD.57.3725

A set of physical operators which are responsible for touching interactions in the framework of c<1 unitary conformal matter coupled to 2D quantum gravity is found. As a special case the non-critical bosonic strings are considered. Some analogies with four dimensional quantum gravity are also discussed, e.g. creation-annihilation operators for baby universes, Coleman mechanism for the cosmological constant.

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