Search for dissertations about: "superstrings"

Found 3 swedish dissertations containing the word superstrings.

2. 1. The Complex World of Superstrings : On Semichiral Sigma Models and N=(4,4) Supersymmetry

   Author : Malin Göteman; Ulf Lindström; Daniel Waldram; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Non-linear sigma models; extended supersymmetry; semichiral superfields; neutral hyperkähler geometry; generalized Kähler geometry; T-duality; vector multiplets; Theoretical Physics; Teoretisk fysik;

   Abstract : Non-linear sigma models with extended supersymmetry have constrained target space geometries, and can serve as effective tools for investigating and constructing new geometries. Analyzing the geometrical and topological properties of sigma models is necessary to understand the underlying structures of string theory. READ MORE

4. 2. Super Wess-Zumino-Witten models

   Author : Måns Henningson; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; conformal field theories; Sugawara construction; Wess-Zumino-Witten models; superstrings; superalgebras;

   Abstract : .... READ MORE

5. 3. Delving in the Dark : Searching for Signatures of Non-Standard Physics in Cosmological and Astrophysical Observables

   Author : Janina J. Renk; Joakim Edsjö; Pat Scott; Felix Kahlhöfer; David F. Mota; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; cosmology; gravitation; Galileon; dark energy; dark matter; cosmic superstrings; neutrino mass; parameter inference; teoretisk fysik; Theoretical Physics;

   Abstract : The dark sectors of our Universe, dark matter and dark energy, together constitute about 96 % of the total energy content of the Universe. To date, we only have observational evidence for their existence. READ MORE