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

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

1991-09-04

arxiv.org/abs/hep-th/9109005v1

Nucl.Phys. B375 (1992) 119-172

Physics

High Energy Physics

High Energy Physics - Theory

55 pages

Scientific paper

10.1016/0550-3213(92)90337-B

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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