Blar i PhD theses (TN-IMF) på emneord "fysikk"

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    • The experimental and theoretical investigation of single-crystal diamond compound refractive lenses (CRLs) 

      Zhang, Qiuyuan (PhD theses (TN-IMF);527, Doctoral thesis, 2020-06)
      In the field of X-ray optics, compound refractive lenses (usually termed CRLs) function as a focusing device for hard X-rays and they are believed to possess a lot of prominent advantages over other focusing devices, such ...

    • From Symmetries to Scattering Amplitudes: A Lie-algebraic categorisation of symmetry-breaking patterns that create enhanced soft limits for NG bosons 

      Bogers, Mark (PhD thesis UiS;, Doctoral thesis, 2022-11)
      The standard calculation of scattering amplitudes in quantum field theory is carried out using a perturbative expansion, that at successive orders contains an escalating number of terms to calculate. The amplitudes depend ...

    • A mathematical approach to Wick rotations 

      Helleland, Christer (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 

      Aadne, Matthew Terje (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 

      Eriksson, Magdalena (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 ...

    • Real-Time Complex Langevin - A Differential Programming Perspective 

      Alvestad, Daniel (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 

      Marcoccia, Paolo (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 

      Normann, Ben David (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 ...