Quantization and Scattering in the IIB SL(2,Z) Covariant Superstring

Details Quantization and Scattering in the IIB SL(2,Z) Covariant Superstring Quantization and Scattering in the IIB SL(2,Z) Covariant Superstring

1999-09-13

arxiv.org/abs/hep-th/9909087v2

JHEP 9910 (1999) 016

Physics

High Energy Physics

High Energy Physics - Theory

15 pages, LaTeX, additional comments

Scientific paper

10.1088/1126-6708/1999/10/016

We rewrite the SL(2,Z) covariant worldsheet action for the IIB string proposed by Townsend in a Polyakov form. In a flat background the formalism yields separate (p,q) sectors. In each one the action is that of the IIB string action with the string slope parameter \alp\pr replaced by its SL(2,Z) analogue \alp_{pq}\pr. SL(2,Z) invariant graviton scattering amplitudes are obtained from those of the fundamental (1,0) string by summing over the different sectors. The tree-level four-graviton amplitude in this formalism differs from a previously conjectured non-perturbative form; both yield the same expansion in order \alpha\pr^3.

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