Search for dissertations about: "Mathematical physics"

Showing result 11 - 15 of 191 swedish dissertations containing the words Mathematical physics.

  2. 11. A classifying algebra for CFT boundary conditions

    Author : Carl Stigner; Jürgen Fuchs; Alexei Semikhatov; Karlstads universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Boundary conditions; Conformal field theory; Factorization constraints; Modular tensor categories; TFT-construction; Mathematical physics; Matematisk fysik; Physics; Fysik;

    Abstract : Conformal field theories (CFT) constitute an interesting class of twodimensionalquantum field theories, with applications in string theoryas well as condensed matter physics. The symmetries of a CFT can beencoded in the mathematical structure of a conformal vertex algebra. READ MORE

  4. 12. Resonant Tunneling in Laterally Confined Quantum Structures

    Author : Boel Gustafson; Fasta tillståndets fysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; gravitation; relativity; quantum mechanics; classical mechanics; Mathematical and general theoretical physics; Fysik; Physics; High peak-to-valley ratio; Lateral confinement; Quantum dots; Resonant tunneling; Self-assembled quantum dots; Schottky depletion; Buried metal gate; Electron transport; Magnetic-field dependence; Energy level width; Tunneling transistors; Mode coupling; statistical physics; thermodynamics; Matematisk och allmän teoretisk fysik; klassisk mekanik; kvantmekanik; relativitet; statistisk fysik; termodynamik; Technological sciences; Teknik; Fysicumarkivet A:2001:Gustafson;

    Abstract : In the thesis, three-dimensionally confined resonant tunneling structures were studied experimentally. Two approaches were used for obtaining quantum confinement: gate-defined lateral constriction of double barrier structures, and epitaxial growth of self-assembled quantum dots. READ MORE

  5. 13. Explorations of University Physics in Abstract Contexts : From de Sitter Space to Learning Space

    Author : Daniel Domert; Cedric Linder; Ulf Danielsson; Duncan Fraser; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Physics; phenomenography; cosmology; de Sitter space; quantum mechanics; conceptual understanding; epistemology; physics equations; Fysik; Physics; Fysik; Physics with specialization in Physics Education; Fysik med inriktning mot fysikens didaktik;

    Abstract : This is a thesis which contributes to research in two different fields: theoretical physics and physics education research. The common link between these two research areas is that both involve explorations of abstract physics and mathematical representations, but from different perspectives. READ MORE

  6. 14. Mathematical Models in Cellular Biophysics

    Author : Jacob Kowalewski; Hjalmar Brismar; Erik Fransén; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Calcium oscillations; Diffusion; Dopamine receptors; Mathematical models; Computer simulations; FRAP; Physics; Fysik;

    Abstract : Cellular biophysics deals with, among other things, transport processes within cells. This thesis presents two studies where mathematical models have been used to explain how two of these processes occur. Cellular membranes separate cells from their exterior environment and also divide a cell into several subcellular regions. READ MORE

  7. 15. Pierced, Wrapped and Torn : Aspects of String Theory Compactifications

    Author : Magdalena Larfors; Ulf Danielsson; Gary Shiu; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Mathematical physics; Matematisk fysik; Theoretical Physics; teoretisk fysik;

    Abstract : An outstanding problem in physics is to find a unified framework for quantum mechanics and general relativity. This is required for a better understanding of black holes and the early cosmology of the universe. String theory provides such a unification. In this thesis, we study aspects of compactifications of type IIB string theory. READ MORE