Sökning: "covariant"
Visar resultat 1 - 5 av 18 avhandlingar innehållade ordet covariant.
1. Space Plasma Dynamics : Instabilities, Coherent Vortices and Covariant Parametrization
Sammanfattning : The magnetospheric cusps are two funnel-like regions of Earth's magnetosphere where solar wind plasma can have direct access to the ionosphere. The cusps are very dynamic regions where wave-particle interactions continuously take place and redistribute energy among different particle populations. LÄS MER
2. Towards a relativistically covariant many-body perturbation theory - With numerical implementation to helium-like ions
Sammanfattning : The experimental results for simple atomic systems have become more and more accurate and in order to keep up with the experimental achievements the theoretical procedures have to be refined. Recent accurate experimental results obtained for helium-like ions in the low- and moderate-Z regions proclaim the importance of theoretical calculations that combines relativistic, QED and electron correlation effects. LÄS MER
3. Whatever goes around comes around : modular invariance in string theory and conformal field theory
Sammanfattning : .... LÄS MER
4. On the construction of covariant models for spinning particles and their quantization
Sammanfattning : .... LÄS MER
5. Derivation and BRST Quantization of Models for Spinning Relativistic Particles
Sammanfattning : This thesis deals with the construction of models for spinning relativistic particles and their covariant quantization within a BRST framework. In the first part the ideas and methods which constitute the background to the papers are reviewed, and a summary of the main results obtained therein is given. The second part consists of the papers. LÄS MER
