Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1995-07-28
Mod. Phys. Lett. A10 (1995) 2381
Physics
High Energy Physics
High Energy Physics - Theory
Latex file, 15 pages
Scientific paper
Factorization of string amplitudes is one way of constructing string interaction vertices. We show that correlation functions in string theory can be conveniently factorized using loop variables representing delta functionals. We illustrate this construction with some examples where one particle is off-shell. These vertices are ``correct'' in the sense that they are guaranteed, by construction, to reproduce S-matrix elements when combined with propagators in a well defined way.
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