Blar i PhD theses (TN-IMF) på tittel
Viser treff 11-17 av 17
-
A mathematical approach to Wick rotations
(PhD thesis UiS;536, Doctoral thesis, 2020-09)In this thesis we define Wick-rotations mathematically using pseudo-Riemannian geometry, and relate Wick-rotations to real geometric invariant theory (GIT). We discover some new results concerning the existence of Wick ... -
Nil-Killing vector fields and Kundt structures
(PhD thesis UiS;529, Doctoral thesis, 2020-06)This thesis is based on three papers, for which two have been submitted for publication and one is published. A chapter presenting relevant background material is included giving convenient access to preliminary foreknowledge ... -
Non-equilibrium quantum field dynamics in the early Universe
(PhD thesis UiS;, Doctoral thesis, 2023)Inflation is the leading paradigm of early Universe cosmology. It provides compelling explanations of the observed near-homogeneity of the cosmic microwave background (CMB) radiation, the spatial flatness of the Universe ... -
Properties of Paley–Wiener spaces: sampling sets, contractions, and geometry of the unit ball
(PhD thesis UiS;, Doctoral thesis, 2023-03)This Thesis is based on five papers, four of which are published and one has been submitted for publication. For convenience of the reader, we also include one chapter that contains a brief overview of the results, some ... -
Real-Time Complex Langevin - A Differential Programming Perspective
(PhD thesis UiS;, Doctoral thesis, 2023)In this thesis, I aim to find solutions to the NP-hard sign-problem that arises when modeling strongly correlated systems in real-time. I will use the complex Langevin (CLE) method, and address its problem of runaway ... -
Signal analysis in gravitational wave data
(PhD thesis UiS;, Doctoral thesis, 2024)In this thesis, I study the gravitational wave signals coming from compact objects on both present-stage, and future gravitational wave detectors. The thesis is based on 3 articles, which will be presented after two brief ... -
Tales from Wonderland
(Doctoral thesis, 2020-06)Knowing that the Universe is quite isotropic, one may, as already discussed in Chapter 1, wonder how likely such a Universe is. We take the following research question. Question 1. Is the asymptotic future of a cosmology ...