Sökning: "field theory"

Visar resultat 1 - 5 av 1471 avhandlingar innehållade orden field theory.

  1. 1. Cluster Effective Field Theory

    Detta är en avhandling från ; Chalmers tekniska högskola; Gothenburg

    Författare :EMIL RYBERG; [2016]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; effective field theory; charge radius; resonant state; renormalization; radiative capture; halo nuclei; power counting; nuclear physics; few-body physics;

    Sammanfattning : Halo nuclei are loosely bound systems consisting of a core plus valence nucleon(s). In so called Halo, or Cluster, effective field theory, the core of the halo nucleus is treated as an effective degree-of-freedom without internal structure. LÄS MER

  2. 2. Conformal Field Theory and D-branes

    Detta är en avhandling från ; Chalmers tekniska högskola; Gothenburg

    Författare :Albrecht Wurtz; Karlstads universitet.; [2006]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; String theory; Conformal field theory; Vertex algebras; D-branes; NATURAL SCIENCES Physics; NATURVETENSKAP Fysik; Physics; Fysik;

    Sammanfattning : The main topic of this doctoral thesis is D-branes in string theory, expressed in the language of conformal field theory. The purpose of string theory is to describe the elementary particles and the fundamental interactions of nature, including gravitation as a quantum theory. LÄS MER

  3. 3. Supergravity, branes and field theory

    Detta är en avhandling från Stockholm : Stockholm University

    Författare :Björn Brinne; [2001]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Supergravity; Quantum field theory; Supergravitation; Kvantfältteori;

    Sammanfattning : .... LÄS MER

  4. 4. Strings, Conformal Field Theory and Noncommutative Geometry

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Keizo Matsubara; Uppsala universitet.; [2004]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Theoretical physics; Theoretical physics; String theory; Conformal field theory; Noncommutative geometry; Star-products; Teoretisk fysik; NATURAL SCIENCES Physics; NATURVETENSKAP Fysik;

    Sammanfattning : This thesis describes some aspects of noncommutative geometry and conformal field theory. The motivation for the investigations made comes to a large extent from string theory. This theory is today considered to be the most promising way to find a solution to the problem of unifying the four fundamental interactions in one single theory. LÄS MER

  5. 5. Aspects of Yang-Mills Theory Solitons, Dualities and Spin Chains

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Lisa Freyhult; Uppsala universitet.; [2004]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Theoretical physics; Theoretical Physics; Field theory; String theory; Yang-Mills; Effective models; Supersymmetry; Solitons; Fermion number; Duality; AdS CFT correspondence; Bethe ansatz; Teoretisk fysik; NATURAL SCIENCES Physics; NATURVETENSKAP Fysik;

    Sammanfattning : One of the still big problems in the Standard Model of particle physics is the problem of confinement. Quarks or other coloured particles have never been observed in isolation. Quarks are only observed in colour neutral bound states. The strong interactions are described using a Yang-Mills theory. LÄS MER