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D branes in string theory

By Paolo Di Vecchia

Abstract

Summary. In this contribution we go through the developments that in the years from 1968 to about 1974 led from the Veneziano model to the bosonic string theory. They include the construction of the N-point amplitude for scalar particles, its factorization through the introduction of an infinite number of oscillators and the proof that the physical subspace was a positive definite Hilbert space. We also discuss the zero slope limit and the calculation of loop diagrams. Lastly, we describe how it finally was recognized that a quantum relativistic string theory was the theory underlying the Veneziano model.

Year: 2013
OAI identifier: oai:CiteSeerX.psu:10.1.1.311.3345
Provided by: CiteSeerX
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