Now showing items 1-20 of 112

    • A Class of Tests for Trend in Time Censored Recurrent Event Data 

      Kvaløy, Jan Terje; Lindqvist, Bo Henry (Journal article; Peer reviewed, 2019-04)
      Statistical tests for trend in recurrent event data not following a Poisson process are generally constructed for event censored data. However, time censored data are more frequently encountered in practice. In this paper ...
    • Algebraens fundamentalteorem 

      Østebø, Marlene Seljeskog (Bachelor thesis, 2021)
      Denne bacheloroppgaven tar utgangspunkt i Algebraens fundamentalteorem og polynomlikningens historie. Algebraens fundamentalteorem sier at hver polynomlikning av grad n med komplekse koeffisienter har minst én kompleks ...
    • Algebraens fundamentalteorem 

      Strømme, Mads Herje (Bachelor thesis, 2021)
    • An Introduction to Supersymmetry 

      Henriksen, Tobias Våge (Masteroppgave/UIS-TN-IMF/2019;, Master thesis, 2019-06-14)
      This thesis gives an introduction to supersymmetry. We compute the Poincaré- conformal- and Clifford algebra in any dimension. Most examples are in four dimensions, including the Wess-Zumino model and supersymmetric gauge ...
    • Analytic structure of nonhydrodynamic modes in kinetic theory 

      Kurkela, Aleksi; Wiedemann, Urs Achim (Peer reviewed; Journal article, 2019-09)
      How physical systems approach hydrodynamic behavior is governed by the decay of nonhydrodynamic modes. Here, we start from a relativistic kinetic theory that encodes relaxation mechanisms governed by different timescales ...
    • Analyticity in Several Complex Variables 

      Zahid, Sadaf (Masteroppgave/UIS-TN-IMF/2020;, Master thesis, 2020)
      there are many similarities between complex analysis in several variables and one variable but there are also some important differences between holomorphic functions of a single variable and holomorphic functions of $n$ ...
    • Anomalous low-temperature thermodynamics of QCD in strong magnetic fields 

      Brauner, Tomas; Kadam, Saurabh (Journal article; Peer reviewed, 2017-11)
      The thermodynamics of quantum chromodynamics at low temperatures and in sufficiently strong magnetic fields is governed by neutral pions. We analyze the interacting system of neutral pions and photons at zero baryon chemical ...
    • Atomic scattering factors and atomic cross-sections in x-ray crystallography 

      Nes, Ioana Andreea (Masteroppgave/UIS-TN-IMF/2018;, Master thesis, 2018-06-15)
      Crystallographers as well as other scientists and engineers need reliable sets of physical data. Focus is here set upon the x-ray attenuation coefficients (the atomic photoeffect cross-section, and the incoherent (Compton) ...
    • Bottomonium suppression at RHIC and LHC 

      Krouppa, Brandon; Rothkopf, Alexander Karl; Strickland, Michael (Peer reviewed; Journal article, 2019-02)
      The strong suppression of heavy quarkonia is a good indicator that one has generated a quark-gluon plasma (QGP) in an ultrarelativistic heavy ion collision. Recent advancements in first principles calculations of the heavy ...
    • Bryan’s Maximum Entropy Method—Diagnosis of a Flawed Argument and Its Remedy 

      Rothkopf, Alexander Karl (Peer reviewed; Journal article, 2020-09)
      The Maximum Entropy Method (MEM) is a popular data analysis technique based on Bayesian inference, which has found various applications in the research literature. While the MEM itself is well-grounded in statistics, I ...
    • Charged FENE-P non-newtonian fluid model 

      Orioma, Charles (Masteroppgave/UIS-TN-IMF/2018;, Master thesis, 2018-06-15)
    • Chiral density wave versus pion condensation at finite density and zero temperature 

      Andersen, Jens Oluf (Journal article; Peer reviewed, 2018-04)
      The quark-meson model is often used as a low-energy effective model for QCD to study the chiral transition at finite temperature T, baryon chemical potential μB, and isospin chemical potential μI. We determine the parameters ...
    • Chiral soliton lattice phase in warm QCD 

      Brauner, Tomas; Kolesova, Helena; Yamamoto, Naoki (Peer reviewed; Journal article, 2021-11)
      We analyze the phase diagram of quantum chromodynamics at low-to-moderate temperature, baryon chemical potential and external magnetic field within chiral perturbation theory at next-to-leading order of the derivative ...
    • Collider phenomenology of a unified leptoquark model 

      Faber, T.; Liu, Y.; Porod, W.; Hudec, M.; Malinsky, M.; Staub, F.; Kolesova, Helena (Peer reviewed; Journal article, 2020-05)
      We demonstrate that in a recently proposed unified leptoquark model based on the gauge group SU(4)C×SU(2)L×U(1) R significant deviations from the Standard Model values of R K and R K ∗ can be accommodated without any need ...
    • Comment on ''Szekeres universes with homogeneous scalar fields'' 

      Delgado Gaspar, Ismael; Sussman, Roberto A.; McNutt, David Duncan; Coley, Alan (Peer reviewed; Journal article, 2021-04)
      In two recently published articles, Barrow and Paliathanasis (2018, 2019) [1, 2] claim to have found exact solutions of Einstein’s field equations belonging to the class of non-trivial (i.e., spatially inhomogeneous) ...
    • Competing risk analysis of Norwegian mortality 

      Nusr, Suhbeldin (Masteroppgave/UIS-TN-IMF/2019;, Master thesis, 2019-06)
      Survival data analysis is a set of statistical methodologies that is used to model time until a certain event occurs. Competing risks data arise frequently in survival data from medical research in situations when individuals ...
    • Correlated insulators in twisted bilayer graphene 

      Mandal, Ipsita; Yao, Jia; Mueller, Erich J. (Peer reviewed; Journal article, 2021-03)
      Experiments on graphene bilayers, where the top layer is rotated with respect to the one below, have displayed insulating behavior when the moiré bands are partially filled. We calculate the charge distributions in these ...
    • Den deriverte, tangenter og elevers forståelse av disse. 

      Abrahamsen, Solveig Mathilde Ingebretsen. (Master thesis, 2021)
      I dette forskningsarbeidet forsøker jeg å få et innblikk i elever med fagene S2 og R2 sin forståelse av den deriverte og tangenter. Hva slags begrepsforståelse har elevene? Er deres forståelse instrumentell og/eller ...
    • Derivations of the Young-Laplace equation 

      Siqveland, Leiv Magne; Skjæveland, Svein Magne (Journal article, 2021-04)
      The classical Young-Laplace equation relates capillary pressure to surface tension and the principal radii of curvature of the interface between two immiscible fluids. In this paper the required properties of space curves ...