Search for dissertations about: "non-local effects"

Showing result 21 - 25 of 25 swedish dissertations containing the words non-local effects.

  2. 21. Van der Waals Interactions in Density Functional Theory

    Author : Erika Hult; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; van der Waals interaction; exchange-correlation energy; adhesion; intermolecular forces; physisorption; density functional theory;

    Abstract : Density functional theory is a very important method for calculating ground-state properties for atoms, molecules and solids. Albeit exact in principle, its implementation requires an approximation for the so-called exchange-correlation energy. READ MORE

  4. 22. Non-equilibrium dynamics of exactly solvable quantum many-body systems

    Author : Per Moosavi; Edwin Langmann; Denis Bernard; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Fysik; Physics;

    Abstract : Recent experimental advances on ultracold atomic gases and trapped ions have made it possible to simulate exactly solvable quantum systems of interacting particles. In particular, the feasibility of making rapid changes, so-called quantum quenches, to such set-ups has allowed experimentalists to probe non-equilibrium phenomena in closed interacting quantum systems. READ MORE

  5. 23. The Geography of Entrepreneurship : regional and individual determinants of new firm formation in Sweden

    Author : Marcin Rataj; Rikard Eriksson; Urban Lindgren; Lars Fredrik Andersson; Raquel Ortega-Argilés; Umeå universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; entrepreneurship; start-up; regional development; urbanization; peripheries;

    Abstract : While there is a rich and growing body of literature on both individual and regional determinants of entrepreneurship, the dominant perspective assumes that these factor play a similar role in different spatial contexts. The thesis investigates in the first place the link between firm formation and economic opportunities that might be conditional on the regional setting. READ MORE

  6. 24. Theoretical Description of the Electron-Lattice Interaction in Molecular and Magnetic Crystals

    Author : Elham Mozafari; Igor A. Abrikosov; Sven Stafström; George Malcolm Stocks; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Molecular crystals; Charge transport; Polaron; Magnetic materials; Paramagnetic state; Molecular dynamics;

    Abstract : Electron-lattice interactions are often considered not to play a major role in material's properties as they are assumed to be small, the second-order effects. However, this study shows the importance of taking these effects into account in the simulations. READ MORE

  7. 25. Local impacts of large investments

    Author : Urban Lindgren; Einar Holm; Claes-Göran Alvstam; Umeå universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Pulp and paper industry; internationalisation; investments; local socio-economic impacts; microsimulation;

    Abstract : The aim of the thesis is to investigate local impacts of large investments. This problem has been approached from three directions and, therefore, the study consists of three themes, namely: the changing spatial patterns of corporate activities, the short-term local economic impacts of invest­ments, and the long-term socio-economic impacts of investments on the local municipality. READ MORE