K-Models and Type IIB Superstring Backgrounds
Alok Kumar, Gautam Sengupta
Abstract
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 order α terms in the equations of motion, is employed to show that these backgrounds are exact.
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