Search for dissertations about: "string field theory"
Showing result 1 - 5 of 57 swedish dissertations containing the words string field theory.
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1. Torn, Spun and Chopped : Various Limits of String Theory
Abstract : For the first time in the history of physics we stand in front of a theory that might actually serve as a unification of it all - string theory. It provides a self-consistent framework for gravity and quantum mechanics, which naturally incorporates matter and gauge interactions of the type seen in the standard model. READ MORE
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2. Dualities, Symmetries and Unbroken Phases in String Theory : Probing the Composite Nature of the String
Abstract : The thesis treats aspects of string/M-theory in anti-de Sitter spacetimes and their supersymmetric completions. By applying the AdS/CFT correspondence, as well as models of spin chains and singletons, we try to attain a better understanding of the underlying symmetries and the unbroken phases of string/M-theory. READ MORE
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3. Cosmoparticle Physics and String Theory
Abstract : This thesis deals with phenomenological and theoretical aspects of cosmoparticle physics and string theory. There are many open questions in these topics. In connection with cosmology we would like to understand the detailed properties of dark matter, dark energy, generation of primordial perturbations, etc. READ MORE
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4. Conformal Field Theory and D-branes
Abstract : The main topic of this doctoral thesis is D-branes in string theory, expressed in the language of conformal field theory. The purpose of string theory is to describe the elementary particles and the fundamental interactions of nature, including gravitation as a quantum theory. READ MORE
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5. Vertex Operators, String Vertices and Conformal Field Theory Deformations
Abstract : We compute multi-string interaction vertices by sewing of basic string interaction vertex operators, so called dual Reggeon vertex operators. These operators describe the interaction between two complete external string sectors. They are particularly useful when the interactions involve twisted sectors. READ MORE