منابع مشابه
Exact Type IIB Superstring Backgrounds
We obtain a family of type IIB superstring backgrounds involving RamondRamond fields in ten dimensions starting from a heterotic string background with vanishing gauge fields. To this end the global SL(2, R) symmetry of the type IIB equations of motion is implemented as a solution generating transformation. Using a geometrical analysis we show that the type IIB backgrounds obtained are solution...
متن کاملS-Duality and Exact Type IIB Superstring Backgrounds
A geometrical approach in the non-symmetric connection framework is employed to examine the issue of higher order α′ corrections to D=10 type IIB superstring backgrounds with a covariantly constant null Killing isometry and non-zero Ramond-Ramond field content. These describe generalized supersymmetric string waves and were obtained recently by us through the S-duality transformations of purely...
متن کاملK models and type IIB superstring backgrounds.
A family of type IIB superstring backgrounds involving Ramond-Ramond fields are obtained in ten dimensions starting from a K-model through a generalization of our recent results. The unbroken global SL(2, R) symmetry of the type IIB equations of motion are implemented in this context as a solution generating transfromation. A geometrical analysis, based on the tensor structure of the higher ord...
متن کاملThe Exact Quartic Effective Action for the Type Iib Superstring
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 generalizing the non-renormalization theorem of the R4 term. Finally, the non-perturbative corrections are of the expected f...
متن کاملType IIA and Type IIB Superstring Theory
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 1996
ISSN: 0370-2693
DOI: 10.1016/0370-2693(96)00248-1