World Sheet and Space Time Physics in Two Dimensional (Super) String Theory

D. Kutasov; P. Di Francesco

World Sheet and Space Time Physics in Two Dimensional (Super) String Theory

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arxiv hep-th/9109005 v1 pith:FPYTGFEX submitted 1991-09-04 hep-th

P. Di Francesco , D. Kutasov This is my paper

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keywords resonantspacetimeamplitudesdimensionalstringstructuresuper

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abstract

We show that tree level ``resonant'' $N$ tachyon scattering amplitudes, which define a sensible ``bulk'' S -- matrix in critical (super) string theory in any dimension, have a simple structure in two dimensional space time, due to partial decoupling of a certain infinite set of discrete states. We also argue that the general (non resonant) amplitudes are determined by the resonant ones, and calculate them explicitly, finding an interesting analytic structure. Finally, we discuss the space time interpretation of our results.

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