Orlando, Domenico (2006) String theory: exact solutions, marginal deformations and hyperbolic spaces. PhD thesis CPHT, EP - CPHT Centre de Physique Théorique, EP/X p.300.
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Abstract
This thesis is almost entirely devoted to studying string theory backgrounds characterized by simple geometrical and integrability properties. The archetype of this type of system is give!
n by Wess-Zumino-Witten models, describing string propagation in a group manifold or, equivalently, a class of conformal field theories with current algebras. We study the moduli space of such models by using truly marginal deformations. Particular emphasis is placed on asymmetric deformations that, together with the cft description, enjoy a very nice spacetime interpretation in terms of the underlying Lie algebra. Then we take a slight detour so to deal with off-shell systems. Using a renormalization-group approach we describe the relaxation towards the symmetrical equilibrium situation. In the final chapter we consider backgrounds with Ramond-Ramond field and in particular we analyze, in the supergravity approxidirect products of constant-curvature spaces and find solutions with hyperbolic spaces.
| Item Type: | PhD Thesis (PhD) |
|---|---|
| Thesis Supervisor: | Petropoulos, Marios |
| Date: | October 2006 |
| Board of examiners: | Brezin, Edouard and Alvarez-Gaume, Luis and Kounnas, Costas and Tseytlin, Arkady and Sevrin, Alexander |
| Ecole Doctorale: | ED 447 ECOLE DOCTORALE DE L'ECOLE POLYTECHNIQUE |
| Discipline: | CPHT |
| Collection (Fonds): | EP/X |
| Institution: | EP/X |
| Department: | EP - CPHT Centre de Physique Théorique |
| Subjects: | 3. Physics, Optics |
| ID Code: | 2178 |
|---|---|
| Deposited By: | Laurence Vidament |
| Deposited On: | 14 February 2007 |
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