Blar i Institutt for fysikk på forfatter "Olaussen, Kåre"

Viser treff 1-11 av 11

    • Bosons and Fermions in Curved Spacetime 

      Sjøstrøm, Dag-Morten (Master thesis, 2013)
      The Klein-Gordon and Dirac equations are formulated for a classical curved background.The equations are then expressed in Friedmann-Robertson-Walker Universe.Further the equations are solved in R×S3 spacetime. We present ...

    • Einstein Gravity with Non-minimally Coupled Scalar Fields 

      Flo, Alexander Christian Phili (Master thesis, 2018)
      A Huggins term has been introduced to the Hilbert-Einstein model and its effect on the scale factor, a scalar field and Hubble parameter has been studied numerically. By comparing the result of a non-zero and a zero coupling ...

    • Exploring the Randall-Sundrum Universe 

      Viksand, Torbjørn (Master thesis, 2014)
      In this thesis, we will explore the physics of warped extra dimensions. More specifically, we will concentrate on the model set forward by Lisa Randall and Raman Sundrum in their paper, "A Large Mass Hierarchy from a Small ...

    • Gauge Dependence of the Quantum Field Theory Effective Potential 

      Andreassen, Anders Johan (Master thesis, 2013)
      Using the absolute stability requirement of the Standard Model vacuum, we compute the Higgs mass bound for the 1-loop Standard Model effective potential with gauge dependence in the $R_\xi$ gauges together with 3-loop beta ...

    • Numerisk modellering av noe kvantesystemer 

      Obeed, Eva (Master thesis, 2016)
      Denne avhandlingen har rapportert gjerninger gjort over mange år, samle notater og programmer fra ulike stadier av utviklingen. For dette årsaken kan det inneholde noe utilsiktet repetisjon av innhold, og (Like utilsiktet) ...

    • Radiation fields and viscous cosmology - Friction in General Relativity 

      Grøsfjeld, Tobias (Master thesis, 2015)
      Certain aspects of the Lorentz transformation, sometimes called beaming, aberration or transverse Doppler effect, induce viscosity-like effects on extended objects moving through radiation fields. In this thesis, these ...

    • Relativistic Fermions in Graphene 

      Berzi, Alan (Master thesis, 2012)
      The Fermi surface of graphene contains points where the connection between excitation energy and crystal momentum is linear, similar to massless or ultrarelativistic fermions. This is important for the physical properties ...

    • Symmetry and mass degeneration in multi-Higgs-doublet models 

      Olaussen, Kåre; Osland, Per; Solberg, Marius Aase (Journal article; Peer reviewed, 2011)
      We investigate possible symmetry properties of the scalar sector of Multi-Higgs-Doublet Models, and, to some extent, the generalization of such models to gauge groups other than SU(2) L  × U(1) Y . In models with C (charge ...

    • Symmetry Breaking in ordinary and supersymmetric Models of Quantum Field Theory 

      Galteland, Peder Notto (Master thesis, 2012)
      This thesis will consider two different theories, and apply variational techniquesto each, in order to investigate their true ground states and the possibility ofsymmetry breaking.A scalar field theory is modified by ...

    • Very-High-Precision Calculations in Physics 

      Noreen, Amna (Doctoral thesis at NTNU, 2012, Doctoral thesis, 2012)

    • Viscous cosmology - Bulk viscosity in the cosmological context 

      Normann, Ben David (Master thesis, 2015)
      The main objective of this thesis has been to estimate the present value of the bulk viscosity of the cosmic fluid. The following list contains a summary of the main results found in the present work: -The bulk viscosity ...