Sökning: "Teoretisk fysik Uppsala"
Visar resultat 1 - 5 av 75 avhandlingar innehållade orden Teoretisk fysik Uppsala.
1. On string integrability : A journey through the two-dimensional hidden symmetries in the AdS/CFT dualities
Sammanfattning : One of the main topics in the modern String Theory are the conjectured string/gauge (AdS/CFT) dualities. Proving such conjectures is extremely difficult since the gauge and string theory perturbative regimes do not overlap. In this perspective, the discovery of infinitely many conserved charges, i.e. LÄS MER
2. Quaternionic Transgression in Hyperkähler Geometry
Sammanfattning : It is known, that hyperkähler varieties being a special case of Riemann and Kähler manifolds, admit more symmetries. For this reason, all important structures possibly admit hyperkähler generalization. Some of these generalizations make a theme of this thesis. LÄS MER
3. On transport theory of correlated mesoscopic systems
Sammanfattning : This thesis is about the theory of quantum transport through low dimensional correlated systems. Correlated systems are interacting many-particle systems where collective effects predominate over the individual properties of particles whereof they consist. Single particle approach to correlated systems would be essentially wrong. LÄS MER
4. On path integral localization and the Laplacian
Sammanfattning : In this thesis, we develop path integral localization methods that are familiar from topological field theory: the integral over the infinite dimensional integration domain depends only on local data around some finite dimensional subdomain.We introduce a new localization principle that unifies BRST localization, the non-Abelian localization principle and the conformal generalization of the Duistermaat-Heckman integration formula. LÄS MER
5. The Whittaker model of the center of the quantum group and Hecke algebras
Sammanfattning : In 1978 Kostant suggested the Whittaker model of the center of the universal enveloping algebra U(g) of a complex simple Lie algebra g. An essential role in this construction is played by a non-singular character χ of the maximal nilpotent subalgebra n+ ⊂ g. LÄS MER