Search for dissertations about: "Relativity theory"
Showing result 1  5 of 53 swedish dissertations containing the words Relativity theory.

1. Gradient Corrections to Exchange Energies within Density Functional Theory
University dissertation from PerSverre Svendsen, Dept. of Theoretical Physics, Solvegata 14 A, 22362 LUNDAbstract : The smallwavector expansions for the first and secondorder exchange energy kernels (secondand thirdorder functional density derivatives of the exchange energy) have been investigated. Expansion coefficients are found, both in the case of a statically screened Coulomb interaction and a 'bare' interaction. READ MORE

2. Theoretical and numerical bimetric relativity
University dissertation from Stockholm : Department of Physics, Stockholm UniversityAbstract : General relativity (GR) is the standard physical theory describing gravitational interactions. All astrophysical and cosmological observations are compatible with its predictions, provided that unknown matter and energy components are included. These are called dark matter and dark energy. READ MORE

3. String Theory at the Horizon Quantum Aspects of Black Holes and Cosmology
University dissertation from Uppsala : Institutionen för teoretisk fysikAbstract : String theory is a unified framework for general relativity and quantum mechanics, thus being a theory of quantum gravity. In this thesis we discuss various aspects of quantum gravity for particular systems, having in common the existence of horizons. READ MORE

4. Aspects of the Duality between Supersymmetric YangMills Theory and String Theory
University dissertation from Department of Theoretical Physics, Lund UniversityAbstract : This thesis deals with three topics related to the Ads/CFT correspondence. In Paper I, solutions describing the geometry of fractional D1branes of Type IIB string theory are presented. The running coupling constant is computed on the gauge theory side. READ MORE

5. Perturbative Methods in General Relativity
University dissertation from Umeå : FysikAbstract : Einstein's theory of general relativity is a cornerstone in the process of gaining increased understanding about problems of gravitational nature. It can be applied to problems on the huge length scales of cosmology and as far as we know it does not break down before the Planck scale is approached. READ MORE