D-branes et orientifolds dans des espaces courbes ou dépendant du temps

Abstract : In this thesis we study string theory with D-branes and possibly
orientifolds in curved or time-dependent spaces. Our study aims at
understanding some aspects of curved and time-dependent spaces, notably because of their importance in cosmology.

The first chapter introduces some bases of string theory.

The second chapter studies non-oriented strings on compact groups SU(2) and SO(3): after reviewing known results about D-branes in such spaces, we present our results on the position of orientifolds and their interaction with open and closed strings.

The third chapter studies D-branes in certain backgrounds of Ramond-Ramond type, using S-duality, which links them with backgrounds of Neveu-Schwarz type, where calculations can be done.

The last chapter considers strings on a D-brane embedded with a plane wave, and introduces tools which allow to study interactions in such a background.
Document type :
Theses
Mathematical Physics [math-ph]. Université Pierre et Marie Curie - Paris VI, 2004. French


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Contributor : Nicolas Couchoud <>
Submitted on : Wednesday, January 26, 2005 - 2:21:57 PM
Last modification on : Friday, September 21, 2007 - 1:25:50 PM

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Nicolas Couchoud. D-branes et orientifolds dans des espaces courbes ou dépendant du temps. Mathematical Physics [math-ph]. Université Pierre et Marie Curie - Paris VI, 2004. French. <tel-00008263>

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