On the exact quartic effective action for the type IIB superstring

Details On the exact quartic effective action for the type IIB superstring On the exact quartic effective action for the type IIB superstring

1997-10-02

arxiv.org/abs/hep-th/9710023v2

Phys.Lett.B422:109-116,1998

Physics

High Energy Physics

High Energy Physics - Theory

14 pages, latex. minor corrections, version to appear in Phys.Lett.B

Scientific paper

10.1016/S0370-2693(97)01430-5

We propose a four-point effective action for the graviton, antisymmetric two-forms, dilaton and axion of type IIB superstring in ten dimensions. It is explicitly SL(2,Z)-invariant and reproduces the known tree-level results. Perturbatively, it has only one-loop corrections for the NS-NS sector, generalizing the non-renormalization theorem of the R^4 term. Finally, the non-perturbative corrections are of the expected form, namely, they can be interpreted as arising from single D-instantons of multiple charge.

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