Sökning: "Chiral de Rham complex"

Hittade 2 avhandlingar innehållade orden Chiral de Rham complex.

  1. 1. Going Round in Circles From Sigma Models to Vertex Algebras and Back

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Joel Ekstrand; Uppsala universitet.; [2011]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chiral de Rham complex; Conformal field theory; Poisson vertex algebra; Sigma model; String theory; Vertex algebra; Theoretical Physics; Teoretisk fysik;

    Sammanfattning : In this thesis, we investigate sigma models and algebraic structures emerging from a Hamiltonian description of their dynamics, both in a classical and in a quantum setup. More specifically, we derive the phase space structures together with the Hamiltonians for the bosonic two-dimensional non-linear sigma model, and also for the N=1 and N=2 supersymmetric models. LÄS MER

  2. 2. Twisting and Gluing On Topological Field Theories, Sigma Models and Vertex Algebras

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Johan Källén; Uppsala universitet.; [2012]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Topological field theory; Chern-Simons theory; Contact geometry; Sigma models; Poisson vertex algebras; Vertex algebras; String theory; Theoretical Physics; Teoretisk fysik;

    Sammanfattning : This thesis consists of two parts, which can be read separately. In the first part we study aspects of topological field theories. We show how to topologically twist three-dimensional N=2 supersymmetric Chern-Simons theory using a contact structure on the underlying manifold. LÄS MER