Sökning: "Conformal Symmetry"
Visar resultat 1 - 5 av 13 avhandlingar innehållade orden Conformal Symmetry.
1. Aspects of conformal strings
Sammanfattning : String theory is the quantum theory in which the fundamental constituents are one-dimensional extended objects in contrast to the usual quantum theories in which the fundamental constituents are point particles. At present we know of only one way to spread out the gravitational interaction and cut off its divergencies without spoiling the consistency of the theory; string theory. LÄS MER
2. Dualities, Symmetries and Unbroken Phases in String Theory : Probing the Composite Nature of the String
Sammanfattning : The thesis treats aspects of string/M-theory in anti-de Sitter spacetimes and their supersymmetric completions. By applying the AdS/CFT correspondence, as well as models of spin chains and singletons, we try to attain a better understanding of the underlying symmetries and the unbroken phases of string/M-theory. LÄS MER
3. Defects, renormalization and conformal field theory
Sammanfattning : 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. LÄS MER
4. Non-conformal gauge/string duality : A rigorous case study
Sammanfattning : The gauge/string duality, a.k.a. the holographic principle is a profound assertion that emerged from string theory. LÄS MER
5. Superconformal Theories in Six Dimensions
Sammanfattning : This thesis consists of an introductory text, which is divided into two parts, and six appended research papers.The first part contains a general discussion on conformal and superconformal symmetry in six dimensions, and treats how the corresponding transformations act on space-time and superspace fields. LÄS MER