Sökning: "field theory"

Visar resultat 21 - 25 av 1938 avhandlingar innehållade orden field theory.

  1. 21. Multiphase continuum modeling of wood : A hybrid mixture theory approach

    Författare :Winston Mmari; Björn Johannesson; Lynn Schreyer; Linnéuniversitetet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Moisture transport; Coupled heat and moisture; Over-hygroscopic; Hybrid mixture theory; Mixture theory; Swelling; Hygro-mechanical; Non-linear elasticity; Large deformation; Phase field crack model; Anisotropic cracking; FEM; Numerical model; Norway spruce; Wood; Porous media; Forestry and Wood Technology; Skog och träteknik;

    Sammanfattning : Wood has been used as a construction material for a very long time. The development of efficient industrial production processes of wood has expanded the use of the material with the introduction of new products, such as engineered wood products. LÄS MER

  3. 22. Topics in perturbation theory : From IBP identities to integrands

    Författare :Alessandro Georgoudis; Joseph A. Minahan; Tristan McLoughlin; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Perturbation theory; Feynman Integrals; Integrable field theories; Correlation functions.; Theoretical Physics; Teoretisk fysik;

    Sammanfattning : In this thesis we present different topics in perturbation theory. We start by introducing the method of integration by parts identities, which reduces a generic Feynman integral to a linear combination of a finite basis of master integrals. LÄS MER

  4. 23. The Quest for M-theory

    Författare :Ulf Gran; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; supersymmetry; solitons; gauge symmetry; M-theory; string theory; duality; p-branes; D-branes; superspace; supergravity;

    Sammanfattning : In ten dimensions, there exist five consistent string theories and in eleven dimensions there is a unique supergravity theory. When trying to find the fundamental theory of nature this is clearly an "embarrassment of riches". In the mid 90s, however, it was discovered that these theories are all related via a kind of transformation called duality. LÄS MER

  5. 24. Bosonic string field theory : operator formulation and string field functional formulation

    Författare :Per Sundell; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; string field theory; BRST-invariance; modular invariance; reggeon vertices; master equation; homotopy Lie algebras; sweing of riemann surfaces;

    Sammanfattning : .... LÄS MER

  7. 25. Studiebesök i religionskunskapsundervisningen : Elevers tal om islam före, under och efter ett moskébesök

    Författare :Thérèse Halvarson Britton; Kerstin von Brömssen; Sidsel Lied; Bodil Liljefors-Persson; Karlstads universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; field visit; mosque; classroom study; Islam; dialogue theory; the interpretive approach; speech genres; religious education; representation; Studiebesök; moské; klassrumsstudie; islam; representation; trosrepresentant; talgenre; en tolkande ansats; dialogteori; religionsdidaktik; Pedagogiskt arbete; Educational Work;

    Sammanfattning : One aim with the Swedish non-confessional religious education is to increase students’ understanding and respect for different ways of thinking and behaving. One opportunity to reflect upon other people's interpretations of life, are field visits. Many teachers and students want to make field visits but few actually do. LÄS MER