Search for dissertations about: "Gravity"

Showing result 6 - 10 of 349 swedish dissertations containing the word Gravity.

  2. 6. Quest for quantum signatures in Axion Dark Matter and Gravity

    Author : Vasileios Fragkos; Igor Pikovski; Ingemar Bengtsson; Stockholms universitet; []
    Keywords : Axion Dark Matter; Gravity; Quantum mechanics; Theoretical Physics; teoretisk fysik;

    Abstract : This licentiate thesis in theoretical physics focuses on the existence of quantum features in physical systems such as axion dark matter and gravity. Our focus is mostly on effects which appear at low energies, a regime in which our models can be confronted with current experiments or within the foreseeable future. READ MORE

  4. 7. Geoid Model of Tanzania from Sparse and Varying Gravity Data Density by the KTH method

    Author : Prosper Ulotu; Lars Sjöberg; Hossein Nahavandchi; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Geoid; sparse gravity data; gravity database; GGM validation by gravity; corrector surface; hybrid geoid; KTH-LSMS with AC; Mt. Kilimanjaro; Tanzania.; Earth sciences; Geovetenskap;

    Abstract : Developed countries are striving to achieve a cm geoid model. Most developing countries/regions think that the situation in their areas does not allow even a few decimetre geoid model. GNSS, which provides us with position, is one of the greatest achievements of the present time. READ MORE

  5. 8. Making Maps and Keeping Logs : Quantum Gravity from Classical Viewpoints

    Author : Niklas Johansson; Ulf Danielsson; Jan de Boer; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; String theory; black holes in string theory; Calabi-Yau geometry; flux compactifications; three-dimensional gravity; Mathematical physics; Matematisk fysik; Theoretical Physics; teoretisk fysik;

    Abstract : This thesis explores three different aspects of quantum gravity. First we study D3-brane black holes in Calabi-Yau compactifications of type IIB string theory. Using the OSV conjecture and a relation between topological strings and matrix models we show that some black holes have a matrix model description. READ MORE

  6. 9. On Satellite Gravity Gradiometry

    Author : Mehdi Eshagh; Lars Erik Sjöberg; Zdenek Martinec; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; satellite orbit; atmosphric desity model; lateral density variation; validation downward continuation; joint inversion; ring modification; Earth sciences; Geovetenskap;

    Abstract : .... READ MORE

  7. 10. Gravity Illustrated. Spacetime Edition

    Author : Rickard Jonsson; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; embeddings; pedagogical techniques; curved spacetime; optical geometry; gyroscope precession; inertial forces;

    Abstract : This thesis deals with essentially four different topics within general relativity: pedagogical techniques for illustrating curved spacetime, inertial forces, gyroscope precession and optical geometry. Concerning the pedagogical techniques, I investigate two distinctly different methods, the dual and the absolute method. READ MORE