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Pierced, Wrapped an...
Pierced, Wrapped and Torn : Aspects of String Theory Compactifications
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- Larfors, Magdalena, 1978- (author)
- Uppsala universitet,Teoretisk fysik
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- Danielsson, Ulf, Professor (thesis advisor)
- Uppsala universitet,Teoretisk fysik
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- Shiu, Gary, Associate Professor (opponent)
- Universidad de Navarra, Pamplona, Spanien
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(creator_code:org_t)
- ISBN 9789155474942
- Uppsala : Acta Universitatis Upsaliensis, 2009
- English 134 s.
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Series: Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, 1651-6214 ; 632
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Abstract
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- An outstanding problem in physics is to find a unified framework for quantum mechanics and general relativity. This is required for a better understanding of black holes and the early cosmology of the universe. String theory provides such a unification. In this thesis, we study aspects of compactifications of type IIB string theory. In the first part of the thesis, we study four-dimensional black holes consisting of D3-branes wrapping cycles in the compact dimensions. We discuss the correspondence between these black holes, topological string theory and matrix models. We then study the influence of black holes on the stability of flux compactifications. In the second part of the thesis, we turn to investigations of the type IIB landscape, i.e. the collection of stable and metastable vacua obtained from flux compactifications on conformal Calabi-Yau manifolds. We show that monodromies are important for the topographic structure of the landscape. In particular we find that there are long series of continuously connected vacua in the complex structure moduli space of the internal manifold. We also use geometric transitions to connect the moduli spaces of different manifolds, and create longer series of vacua. Finally, we investigate the stability of string theory vacua by constructing semiclassical instantons. These results have implications for the population of the landscape by eternal inflation.
Subject headings
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
Keyword
- Mathematical physics
- Matematisk fysik
- Theoretical Physics
- teoretisk fysik
Publication and Content Type
- vet (subject category)
- dok (subject category)
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