Search for dissertations about: "boundary conformal field theory"

Showing result 1 - 5 of 14 swedish dissertations containing the words boundary conformal field theory.

2. 1. Defects, renormalization and conformal field theory

   Author : Alexander Söderberg Rousu; Agnese Bissi; Pedro Liendo; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; defects; boundaries; replica twist defect; conformal field theory; quantum field theory; Coleman-Weinberg mechanism; renormalization group flows; Theoretical Physics; Teoretisk fysik;

   Abstract : Defects in quantum field theories appear in many different contexts and are of great physical interest. Among other things, defects are used to describe the Kondō effect in condensed matter, confinement in quantum chromodynamics, Rényi entropy in quantum information and cosmic strings in string theory. READ MORE

4. 2. Conformal Field Theory and D-branes

   Author : Albrecht Wurtz; Jürgen Fuchs; Bert Schellekens; Karlstads universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; String theory; Conformal field theory; Vertex algebras; D-branes; Physics; Fysik; Physics; Fysik;

   Abstract : 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. READ MORE

5. 3. Strings, Conformal Field Theory and Noncommutative Geometry

   Author : Keizo Matsubara; Anton Alekseev; Edwin Langmann; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Theoretical physics; Theoretical physics; String theory; Conformal field theory; Noncommutative geometry; Star-products; Teoretisk fysik; Physics; Fysik;

   Abstract : 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. READ MORE

6. 4. Boundary states in conformal field theory

   Author : Albrecht Wurtz; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Physics; Fysik;

   Abstract : This licentiate thesis discusses boundary states in conformal field theories related to WZW (Wess-Zumino-Witten) models. These models are used as building blocks to describe the compact extra dimensions of certain string theories. The focus of the first chapter is to give a flavor of conformal field theory. READ MORE

7. 5. Topics on D-branes and Holography

   Author : Mikael Smedbäck; Joseph Minahan; Anton Alekseev; Paolo Di Vecchia; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Theoretical physics; theoretical physics; string theory; D-branes; dualities; AdS CFT; spin chains; Bethe ansatz; boundary conformal field theory; conformal bootstrap; tachyon condensation; string field theory; loop quantum gravity; black holes; area spectrum; Hawking radiation; holographic principle; Teoretisk fysik; Physics; Fysik;

   Abstract : We discuss various aspects of D-branes in string theory and holography in string theory and loop quantum gravity.One way to study D-branes is from a microscopic perspective, using conformal field theory techniques. For example, we investigate the question of how D-branes can be introduced into orbifolded theories. READ MORE