Sökning: "double copy"

Visar resultat 1 - 5 av 26 avhandlingar innehållade orden double copy.

  1. 1. Det dubbla statushandikappet och sjukförsäkringens moraliska praktiker : en aktstudie om sjukpenningärenden som får negativa beslut på Försäkringskassan

    Författare :Peter Hultgren; Sven Hort; Lena Agevall; Rafael Lindqvist; Linnéuniversitetet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Sjukförsäkring; moraliska praktiker; arbetslinjen; sjukdom; arbetsförmåga; Sociology; Sociologi; Sociology; Sociologi;

    Sammanfattning : In recent years an increasing number of sickness allowance cases have been closed with a negative decision despite the fact that a certifying doctor has recommended sick leave. At Social Insurance Offices, a case file is established for each sickness allowance case. The case files for 538 rejected cases form the basis for this study. LÄS MER

  3. 2. Cohomologies for String Amplitudes

    Författare :Carlos Rodriguez; Oliver Schlotterer; Lionel Mason; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; string theory; string amplitudes; hypergeometric functions; double copy; polylogarithms; Theoretical Physics; Teoretisk fysik;

    Sammanfattning : In this thesis we cover methods useful for the low-energy-expansion, or α’-expansion of string amplitudes. The task of α’-expanding a string amplitude can be divided into two steps: decomposing your string amplitude into a family of integrals, and figuring out how to α’-expand each integral in these families. LÄS MER

  4. 3. Exploring effective descriptions of gauge fields and strings : A Lagrangian approach with insights from color-kinematics duality

    Författare :Lucia M. Garozzo; Henrik Johansson; Chris White; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; scattering amplitudes; double copy; gauge theory; string theory; Theoretical Physics; Teoretisk fysik;

    Sammanfattning : The concept of a color-kinematics duality is an important driving force in advancing the modern understanding of scattering amplitudes, in both field theory and string theory. Yet, open questions remain that motivate the need for a deeper understanding of the duality. LÄS MER

  5. 4. Origin and mobility of major and key trace elements (Cs, YREEs) in fracture groundwater in the upper 1.2 kilometres of coastal granitoids : Implications for future repositories of spent nuclear fuel

    Författare :Frédéric A. Mathurin; Mats E. Åström; Marcus Laaksoharju; Birgitta Kalinowski; Niklaus Waber; Linnéuniversitetet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; fracture groundwater; groundwater mixing; seawater intrusion; water-rock interactions; cation exchange; Cesium; Rare Earth Elements; colloidal speciation; humic substances; dual porosity; inverse modelling; Äspö HRL; Laxemar; Forsmark; eaux de fractures; mélange d eaux; intrusion d eau de mer; interactions eau-roche; échanges cationiques; Césium; Elements Terres Rares; spéciation colloïdale; substances humiques; double porosité; modélisation inverse; Äspö HRL; Laxemar; Forsmark; sprickvatten; grundvatten mixing; havsvattenintrusion; vatten-berg interaction; katjonbyte; cesium; sällsynta jordartsmetaller; kollidal speciation; humusämnen; dual porositet; invers modellering; Äspölaboratoriet; Äspötunneln; Laxemar; Forsmark; Miljövetenskap; Environmental Science;

    Sammanfattning : This thesis focuses on the chemical and isotopic features of groundwater residing in the upper 1.2 km of sparsely fractured crystalline bedrock of the Baltic Shield. LÄS MER

  7. 5. A cohort study of sex differences and prognostic biomarkers in colorectal cancer

    Författare :Sakarias Wangefjord; Tumörmikromiljö; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; colorectal cancer; prognosis; treatment prediction; biomarkers; sex differences; cyclin D1; microsatellite instability; beta-catenin; KRAS mutation; BRAF mutation; EGFR expression; EGFR gene copy number alterations;

    Sammanfattning : Colorectal cancer (CRC) is one of the most common forms of cancer worldwide, with an annual incidence of more than 1 million cases. Despite advancements in the management of CRC, mortality remains high. LÄS MER