Search for dissertations about: "shell structure dissertation"

Showing result 1 - 5 of 10 swedish dissertations containing the words shell structure dissertation.

  2. 1. Solitons, vortices and shell structure in ultracold atomic quantum systems

    Author : Gunnar Eriksson; NanoLund: Centre for Nanoscience; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; few-body physics; finite-size effects; solitary waves; quantized vortices; quantum hysteresis; shell structure; dipolar interactions; Fysicumarkivet A:2020:Eriksson;

    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

  4. 2. Correlations in Finite Fermi Systems - Semiclassics and Shell Structure

    Author : Henrik Uhrenholt; Matematisk fysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Fysicumarkivet A:2008:Uhrenholt;

    Abstract : This dissertation investigates correlations in finite Fermi systems. The atomic nuclei is the mainly studied system but also other systems, like superconducting metallic grains and cold Fermionic gases are considered. The dissertation comprises of five original papers. READ MORE

  5. 3. Rigidity of the Doubly-Magic 100Sn Core

    Author : Matej Lipoglavsek; Partikel- och kärnfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; in-beam gamma-ray spectrscopy; nuclear structure; fusion-evaporation reactions; nuclear shell model; quadrupole polarization charge; doubly-magic nucleus; Nuclear physics; Kärnfysik; Fysicumarkivet A:1998:Lipoglavšek;

    Abstract : The doubly magic nucleus 100Sn represents a crucial test for the nuclear shell model, which is a widely used model for a quantitative description of nuclei. Excited states in 100Sn are experimentally not accessible with present day techniques, but it is possible to gain insight into its structure by studying the properties of excited states of neighboring nuclei. READ MORE

  6. 4. Semiclassical Analysis of Super-Shell Structure in Trapped Fermi Gases

    Author : Magnus Ögren; Matematisk fysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Fysicumarkivet A:2008:Ögren;

    Abstract : This dissertation investigates the oscillation part of the level density for trapped fermions. Analytical so-called trace formulae have been known for the two theoretically important potentials, the spherical cavity and harmonic oscillator, since more than thirty years. READ MORE

  7. 5. Design and Characterization of Functional Structures for Electromagnetic Waves

    Author : Andreas Ericsson; Teoretisk elektroteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electromagnetic scattering; functional structure; circular polarization selective structure; reflector antenna; electromagnetic absorber; radar cross section; compressive sensing; triaxial weave; homogenization; physical optics;

    Abstract : This dissertation deals with design and characterization of functional structures for scattering of electromagnetic waves. An abundance of these structures can be found in nature, such as the structural coloration in the feathers of a peacock, the scales of butterflies and the shell of scarab beetles. READ MORE