Blar i Department of Mathematics and Physics (TN-IMF) på tittel
Viser treff 237-256 av 294
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Soft photon propagation in a hot and dense medium to next-to-leading order
(Peer reviewed; Journal article, 2023)We present the first complete calculation of the soft photon self-energy to the next-to-leading order in a hot and/or dense ultrarelativistic plasma in QED. The calculation is performed within the real-time formalism ... -
Some factors affecting the grades of technology students
(Peer reviewed; Journal article, 2017)In this study factors that affect the grades of Norwegian technology students have been investigated. The total data set contained 355.706 individual exams from 63 different engineering master programs during the 2010 to ... -
Spectral function for overoccupied gluodynamics from classical lattice simulations
(Peer reviewed; Journal article, 2019)We study the spectral properties of an overoccupied gluonic system far from equilibrium. Using classical Yang–Mills simulations and linear response theory, we determine the statistical and spectral functions. We measure ... -
Spectroscopy for asymmetric binary black hole mergers
(Peer reviewed; Journal article, 2023)Black hole spectroscopy is the proposal to observe multiple quasinormal modes in the ringdown of a binary black hole merger. In addition to the fundamental quadrupolar mode, overtones and higher harmonics may be present ... -
Spontaneous momentum dissipation and coexistence of phases in holographic Horndeski theory
(Peer reviewed; Journal article, 2019)We discuss the possible phases dual to the AdS hairy black holes in Horndeski theory. In the probe limit breaking the translational invariance, we study the conductivity and we find a nontrivial structure indicating a ... -
Stable solvers for real-time Complex Langevin
(Peer reviewed; Journal article, 2021-08)This study explores the potential of modern implicit solvers for stochastic partial differential equations in the simulation of real-time complex Langevin dynamics. Not only do these methods offer asymptotic stability, ... -
Static quark-antiquark interactions at nonzero temperature from lattice QCD
(Peer reviewed; Journal article, 2022)flavor lattice QCD calculations. The study consists of two parts. The first investigates the properties of Wilson line correlators in Coulomb gauge and compares to predictions of hard-thermal loop perturbation theory. As ... -
Statistical Shape Analysis of Brain Structures
(Masteroppgave/UIS-TN-IMF/2020;, Master thesis, 2020-06)The purpose of this work is to study structural differences of the left hippocampus between patients with Parkinson's disease (PD) and healthy control group (CG) based on shape models like skeletal representation (s-rep) ... -
Statistics on Lefschetz thimbles: Bell/Leggett-Garg inequalities and the classical-statistical approximation
(Peer reviewed; Journal article, 2021)Inspired by Lefschetz thimble theory, we treat Quantum Field Theory as a statistical theory with a complex Probability Distribution Function (PDF). Such complex-valued PDFs permit the violation of Bell-type inequalities, ... -
Statistiske metoder for analyse av data fra nasjonale prøver og undersøkelser i skoleverket.
(Master thesis, 2021)Nasjonale prøver ble for første gang gjennomført våren 2004. En forskningsbasert evaluering av prøvene i 2005 anbefalte sterkt en kraftig kompetanseheving på testteori og psykometri for de som utvikler og for de som leder ... -
Stochastic Epidemic Models on Complex Network
(Masteroppgave/UIS-HF-IMF/2019;, Master thesis, 2020-06-14)The spread of a virus or the outbreak of an epidemic are natural examples of stochastic processes. Classical mathematical descriptions of such phenomenon include various branching processes such as the SIR (Susceptible-I ... -
Stochastic gravitational wave background from stellar origin binary black holes in LISA
(Peer reviewed; Journal article, 2023)We use the latest constraints on the population of stellar origin binary black holes (SOBBH) from LIGO/Virgo/KAGRA (LVK) observations, to estimate the stochastic gravitational wave background (SGWB) they generate in the ... -
Stochastic inflation from quantum field theory and the parametric dependence of the effective noise amplitude
(Peer reviewed; Journal article, 2022-02)The non-linear dynamics of long-wavelength cosmological fluctuations may be phrased in terms of an effective classical, but stochastic evolution equation. The stochastic noise represents short-wavelength modes that continually ... -
Structure and morphology of CeO2 thin films from Raman spectroscopy and microscopic studies
(Master thesis, 2022)Cerium oxide has been subject of numerous studies because of its current and potential uses in supercapacitors, solar cells, self-cleaning glasses and in catalysis. Use of ceria in self-cleaning glass, especially on the ... -
A study of inhomogeneous massless scalar gauge fields in cosmology
(Peer reviewed; Journal article, 2022)Why is the Universe so homogeneous and isotropic? We summarize a general study of a γ-law perfect fluid alongside an inhomogeneous, massless scalar gauge field (with homogeneous gradient) in anisotropic spaces with General ... -
Study of Photochromic Effect in Yttrium Oxyhydride Films
(Master thesis, 2021)Mixed anion compounds have multiple different anions as part of their structure. Due to the different nature of individual anions the mixed anion compounds may exhibit other properties than the well known single anion ... -
Supernova constraints on dark flavored sectors
(Peer reviewed; Journal article, 2021-06)Proto-neutron stars forming a few seconds after core-collapse supernovae are hot and dense environments where hyperons can be efficiently produced by weak processes. By making use of various state-of-the-art supernova ... -
Survival Analysis using Cox Regression on Breast Cancer Data
(Master thesis, 2020-06)In this report, survival data from a german breast cancer study has been analysed using the programming software R. For the 686 female patients participating in the study, the value of eight explanatory variables were ... -
Symmetric teleparallel geometries
(Peer reviewed; Journal article, 2022)In teleparallel gravity and, in particular, in F(T) teleparallel gravity, there is a challenge in determining an appropriate (co-)frame and its corresponding spin connection to describe the geometry. Very often, the ‘proper’ ... -
Symmetry and Equivalence in Teleparallel Gravity
(Peer reviewed; Journal article, 2020-07)In theories such as teleparallel gravity and its extensions, the frame basis replaces the metric tensor as the primary object of study. A choice of coordinate system, frame basis, and spin-connection must be made to obtain ...