Search for dissertations about: "Relativity theory"
Showing result 21 - 25 of 60 swedish dissertations containing the words Relativity theory.
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21. Thermoelectric phenomena in low-dimensional semiconductor systems
Abstract : This thesis investigates thermoelectric effects, predominantly in low-dimensional semiconductors. Various novel phenomena are predicted, investigated and discussed. READ MORE
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22. Model Vertices Beyond the GW Approximation
Abstract : We study the effects of local vertex corrections to the self energy of the electron gas. We find that a vertex derived from time-dependent density-functional theory can give accurate self energies without including the explicit time dependence of the exchange-correlation potential provided, however, that a proper decay at large momentum transfer (large q) is built into the vertex function. READ MORE
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23. Gravitational perturbations in plasmas and cosmology
Abstract : Gravitational perturbations can be in the form of scalars, vectors or tensors. This thesis focuses on the evolution of scalar perturbations in cosmology, and interactions between tensor perturbations, in the form of gravitational waves, and plasma waves. READ MORE
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24. Horizons and time machines : global structures in locally trivial spacetimes
Abstract : .... READ MORE
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25. Studies in the synthesis of quantum theory and general relativity
Abstract : .... READ MORE