Noncritical Superstrings in a Ramond-Ramond Background

Details Noncritical Superstrings in a Ramond-Ramond Background Noncritical Superstrings in a Ramond-Ramond Background

2003-08-19

arxiv.org/abs/hep-th/0308119v2

JHEP 0406 (2004) 024

Physics

High Energy Physics

High Energy Physics - Theory

12 pages, latex

Scientific paper

10.1088/1126-6708/2004/06/024

We use the recently found matrix description of noncritical superstring theory of Type 0A to compute tachyon scattering amplitudes in a background with a RR flux. We find that after the string coupling is multiplicatively renormalized, the amplitudes in any genus become polynomial in the RR flux. We propose that in the limit where both the string coupling and the RR flux go to infinity, the theory has a weakly-coupled description in terms of another superstring theory with a vanishingly small RR flux. This duality exchanges the inverse string coupling and the 0-brane charge. The dual superstring theory must have a peculiar property that its only field-theoretic degree of freedom is a massless RR scalar.

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