Sökning: "D-branes"

Visar resultat 1 - 5 av 13 avhandlingar innehållade ordet D-branes.

  1. 1. Topics on D-branes and Holography

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Mikael Smedbäck; Uppsala universitet.; [2004]
    Nyckelord :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; NATURAL SCIENCES Physics; NATURVETENSKAP Fysik;

    Sammanfattning : 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. LÄS MER

  2. 2. Conformal Field Theory and D-branes

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    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. Strings, boundary fermions and coincident D-branes

    Detta är en avhandling från Stockholm : Fysikum

    Författare :Linus Wulff; Stockholms universitet.; [2007]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; string theory; open strings; D-branes; supersymmetry; non-abelian gauge theory; tensionless strings; NATURAL SCIENCES Physics; NATURVETENSKAP Fysik;

    Sammanfattning : The appearance in string theory of higher-dimensional objects known as D-branes has been a source of much of the interesting developements in the subject during the past ten years. A very interesting phenomenon occurs when several of these D-branes are made to coincide: The abelian gauge theory living on each brane is enhanced to a non-abelian gauge theory living on the stack of coincident branes. LÄS MER

  4. 4. Superconformal D-branes and moduli spaces

    Detta är en avhandling från Stockholm : Stockholms universitet

    Författare :Cecilia Albertsson; Stockholms universitet.; [2003]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURAL SCIENCES Physics; NATURVETENSKAP Fysik; Theoretical Physics; teoretisk fysik;

    Sammanfattning : The on-going quest for a single theory that describes all the forces of nature has led to the discovery of string theory. This is the only known theory that successfully unifies gravity with the electroweak and strong forces. LÄS MER

  5. 5. Aspects of QFT with boundaries and D-branes

    Detta är en avhandling från Stockholm : Stockholm University

    Författare :Maxim Zabzine; [2001]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Theoretical Physics; teoretisk fysik;

    Sammanfattning : Modern string theory is a rich framework which goes beyond standard quantum field theory. There is a belief that at low energies string theory reduces to the Standard Model and Einstein's gravity. In the last years we have learned that there exist different descriptions of the same physics, containing both strings and other extended objects. LÄS MER