Negative Screenings in Conformal Field Theory and 2D Gravity: The Braiding Matrix

Details Negative Screenings in Conformal Field Theory and 2D Gravity: The Braiding Matrix Negative Screenings in Conformal Field Theory and 2D Gravity: The Braiding Matrix

1999-04-20

arxiv.org/abs/hep-th/9904141v1

Nucl.Phys. B574 (2000) 525-550

Physics

High Energy Physics

High Energy Physics - Theory

31 pages, LaTeX, 1 figure

Scientific paper

10.1016/S0550-3213(99)00799-3

We consider an extension of the Coulomb gas picture which is motivated by Liouville theory and contains negative powers of screening operators on the same footing as positive ones. The braiding problem for chiral vertex operators in this extended framework is analyzed. We propose explicit expressions for the R-matrix with general integer screening numbers, which are given in terms of 4F3 q-hypergeometric functions through natural analytic continuations of the well-known expression for positive integer screenings. These proposals are subsequently verified using a subset of the Moore-Seiberg equations that is obtained by simple manipulations in the operator approach. Interesting new relations for q-hypergeometric functions (particularly of type 4F3) arise on the way.

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