Solution { Generating Transformations and the String Effective Action


We study exhaustively the solution-generating transformations (dualities) that occur in the context of the low-energy e ective action of superstring theory. We rst consider target-space duality (\T duality") transformations in absence of vector elds. We nd that for one isometry the full duality group is (SO"(1; 1)) D4, the discrete part (D4) being… (More)


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