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Duality Symmetries in String Theory

Massimo Bianchi

hep-tharXiv:hep-th/9511178

Abstract

We review the status of duality symmetries in superstring theories. These discrete symmetries mark the striking differences between theories of pointlike objects and theories of extended objects. They prove to be very helpful in understanding non-perturbative effects in string theories. We will also briefly discuss the strange role played by open strings and their solitons in the emerging scenario.

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