Search for dissertations about: "Ingemar Bengtsson"

Showing result 1 - 5 of 14 swedish dissertations containing the words Ingemar Bengtsson.

  2. 1. Chronic pain : epidemiological studies in a general population

    Author : H. Ingemar Andersson; Bengt Scherstén; Göran Ejlertsson; Ido Leden; Calle Bengtsson; Sweden Lund University Department of Community Health Sciences; []
    Keywords : MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; chronic pain; epidemiology; health care; Epidemiology; Epidemiologi; MEDICINE; MEDICIN;

    Abstract : The aim was to study the epidemiology of chronic pain (> 3 months duration) and factors associated to pain prevalence, prognosis, health care and medication in a general population. A cross-sectional mailed survey to a random population sample (n = 1806) was followed by a clinical examination and a prospective study of three selected groups. READ MORE

  4. 2. Holonomy in Quantum Information Geometry

    Author : Ole Andersson; Ingemar Bengtsson; Boris Shapiro; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Theoretical Physics; teoretisk fysik; Physics;

    Abstract : In this thesis we provide a uniform treatment of the two most popular non-adiabatic geometric phases for dynamical systems of mixed quantum states, namely those of Uhlmann and of Sjöqvist et al. We develop a holonomy theory for the latter which we also relate to the already existing theory for the former. READ MORE

  5. 3. Configurations in Quantum Information

    Author : Kate Blanchfield; Ingemar Bengtsson; Erik Sjöqvist; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; fysik; Physics;

    Abstract : Measurements play a central role in quantum information. This thesis looksat two types: contextual measurements and symmetric measurements. Contextualityoriginates from the Kochen-Specker theorem about hidden variablemodels and has recently undergone a subtle shift in its manifestation. READ MORE

  6. 4. Geometry and foundations of quantum mechanics

    Author : Kate Blanchfield; Ingemar Bengtsson; Anthony Sudberry; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; teoretisk fysik; Theoretical Physics;

    Abstract : This thesis explores three notions in the foundations of quantum mechanics: mutually unbiased bases (MUBs), symmetric informationally-complete positive operator valued measures (SICs) and contextuality. MUBs and SICs are sets of vectors corresponding to special measurements in quantum mechanics, but there is no proof of their existence in all dimensions. READ MORE

  7. 5. Exploring the Elegant Bell Inequality

    Author : Irina Dumitru; Ingemar Bengtsson; Marcin Pawłowski; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Bell inequality; Symmetric Informationally Complete POVM; Device Independent Certification; teoretisk fysik; Theoretical Physics;

    Abstract : In quantum information, device independent certification is a matter of both practical and fundamental interest. In this thesis, we explore the use of a particular Bell inequality, known as the elegant Bell inequality, in device independent certification. READ MORE