Coupling of Tachyons and Discrete States in c = 1 2 - D Gravity
نویسندگان
چکیده
All the three point couplings involving tachyons and/or discrete states are obtained in c = 1 two-dimensional (2-D) quantum gravity by means of the operator product expansion (OPE). Cocycle factors are found to be necessary in order to maintain the analytic structure of the OPE, and are constructed explicitly both for discrete states and for tachyons. The effective action involving tachyons and discrete states is worked out to summarize all of these three point couplings.
منابع مشابه
N ov 1 99 1 TIT / HEP – 179 STUPP – 91 – 122 February 1 , 2008 Operator Product Expansion and Topological States in c = 1 Matter Coupled to 2 - D Gravity
Factorization of the N -tachyon amplitudes in two-dimensional c = 1 quantum gravity is studied by means of the operator product expansion of vertex operators after the Liouville zero mode integration. Short-distance singularities between two tachyons with opposite chiralities account for all singularities in the N -tachyon amplitudes. Although the factorization is valid, other possible short-di...
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