Search for dissertations about: "cosmological perturbations"

Showing result 6 - 7 of 7 swedish dissertations containing the words cosmological perturbations.

2. 6. Strings, Gravitons, and Effective Field Theories

   Author : Igor Buchberger; Marcus Berg; Joseph A. Minahan; Karlstads universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; string theory; amplitudes; supersymmetry; particle phenomenology; BMSSM; modified gravity; bimetric; massive gravity; Lie algebras; ribbon categories; Physics; Fysik;

   Abstract : This thesis concerns a range of aspects of theoretical physics. It is composed of two parts. In the first part we motivate our line of research, and introduce and discuss the relevant concepts. In the second part, four research papers are collected. READ MORE

4. 7. Unravelling Consistent Spin-2 Interactions

   Author : Mikael von Strauss; Sayed Fawad Hassan; Mikhail Volkov; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Modified Gravity; Massive Spin-2; Spin-2 Interactions; teoretisk fysik; Theoretical Physics;

   Abstract : Recently, a unique formulation of a classically consistent theory of massive spin-2 fields has emerged. In this thesis I address a few of the primary questions that arise once such a theory is available. READ MORE