Search for dissertations about: "carl stigner"

Found 2 swedish dissertations containing the words carl stigner.

  1. 1. A classifying algebra for CFT boundary conditions

    University dissertation from Karlstad : Karlstad University

    Author : Carl Stigner; Karlstads universitet.; [2009]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Boundary conditions; Conformal field theory; Factorization constraints; Modular tensor categories; TFT-construction; NATURAL SCIENCES Physics Other physics Mathematical physics; NATURVETENSKAP Fysik Övrig fysik Matematisk fysik; Physics; Fysik;

    Abstract : Conformal field theories (CFT) constitute an interesting class of twodimensionalquantum field theories, with applications in string theoryas well as condensed matter physics. The symmetries of a CFT can beencoded in the mathematical structure of a conformal vertex algebra. READ MORE

  2. 2. Hopf and Frobenius algebras in conformal field theory

    University dissertation from Karlstad : Karlstad University Press

    Author : Carl Stigner; Karlstads universitet.; [2012]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; conformal field theory; category theory; Hopf algebra; Frobenius algebra; coends; mapping class group; defect lines; factorization constraints; Physics; Fysik;

    Abstract : There are several reasons to be interested in conformal field theories in two dimensions. Apart from arising in various physical applications, ranging from statistical mechanics to string theory, conformal field theory is a class of quantum field theories that is interesting on its own. First of all there is a large amount of symmetries. READ MORE