Search for dissertations about: "quantized vortices"
Found 4 swedish dissertations containing the words quantized vortices.
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1. Solitons, vortices and shell structure in ultracold atomic quantum systems
Abstract : This dissertation deals with finite-size effects in a few different quantum many-body phenomena in ultracold atomic systems. The finite-sized systems were simulated numerically using both mean-field methods and methods beyond mean-field, e.g. quadratic configuration interaction and exact diagonalization. READ MORE
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2. Vortices and Persistent Currents in Rotating Bose Gases - a Diagonalization Approach
Abstract : In this thesis, I explore the behavior of rotating ultra-cold Bose gases, by diagonalizing the Hamiltonian. This method has the advantage of being exact in the limit of weak interactions, and thus is a useful complement to the more commonly used Gross-Pitaevskii (GP) equation, which relies on a mean-field approximation. READ MORE
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3. Quantum Few-Body Physics with the Configuration Interaction Approach: Method Development and Application to Physical Systems
Abstract : This dissertation, based on six included papers, theoretically investigates properties of quantum few-particle systems. An overview of related experimental research - ultra-cold trapped dilute gases, and electrons in quantum dots - is given, followed by a description of some of the studied many-particle phenomena - Bose-Einstein condensation, quantized vortices, Wigner localization and the Tonks-Girardeau gas. READ MORE
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4. Superfluidity and Supersolidity in Ultracold Atomic Gases Beyond Mean Field
Abstract : This thesis investigates ultracold bosonic systems using an extended mean-field formalism with a focus on their superfluid and supersolid properties. The dissertation comprises five chapters and four articles, where the chapters provide some background to the research put forward in articles. READ MORE