Department of Mathematics and Physics (TN-IMF)
Collections in this community
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PhD theses (TN-IMF) [20]
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Studentoppgaver (TN-IMF) [122]
Master- og bacheloroppgaver i matte og fysikk
Recent Submissions
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The proper Landau-Ginzburg potential is the open mirror map
(Peer reviewed; Journal article, 2024)The mirror dual of a smooth toric Fano surface X equipped with an anticanonical divisor E is a Landau-Ginzburg model with superpotential, W . Carl-Pumperla-Siebert give a definition of the superpotential in terms of tropical ... -
Magnetic structure and crystal-field states of antiferromagnetic CeNiGe3: Neutron scattering and μsR investigations
(Peer reviewed; Journal article, 2024)We present the results of microscopic investigations of antiferromagnetic CeNiGe3 using neutron powder diffraction (NPD), inelastic neutron scattering (INS), and muon spin relaxation (mu SR) measurements. CeNiGe3 crystallizes ... -
Instabilities of perturbations in some homogeneous color-electric and -magnetic backgrounds in SU(2) gauge theory
(Peer reviewed; Journal article, 2024)We consider the instabilities of field perturbations around a homogeneous background color-electric and/or -magnetic field in SU(2) pure gauge theory. We investigate a number of distinct cases of background magnetic and ... -
Smooth reheating and dark matter via non-Abelian gauge theory
(Peer reviewed; Journal article, 2024)We demonstrate how a dark sector can provide a crucial link between a vacuum-dominated early universe and the later radiation-dominated epoch. As an example, we consider a feeble axion-like coupling of dark non-Abelian ... -
Perturbative QCD reveals the softening of matter in the cores of massive neutron stars
(PhD thesis UiS, Doctoral thesis, 2025)The cores of neutron stars (NSs) contain the densest matter in the universe. Rapid advancements in neutron-star observations allow unprecedented empirical access to cold, ultra-dense Quantum Chromodynamics (QCD) matter. ... -
Gravitational waves from first-order phase transitions in LISA: reconstruction pipeline and physics interpretation
(Peer reviewed; Journal article, 2024)We develop a tool for the analysis of stochastic gravitational wave backgrounds from cosmological first-order phase transitions with LISA: we initiate a template databank for these signals, prototype their searches, and ... -
Dipole symmetries from the topology of the phase space and the constraints on the low-energy spectrum
(Peer reviewed; Journal article, 2024)We demonstrate the general existence of a local dipole conservation law in bosonic field theory. The scalar charge density arises from the symplectic form of the system, whereas the tensor current descends from its stress ... -
Estimate for the Bulk Viscosity of Strongly Coupled Quark Matter Using Perturbative QCD and Holography
(Peer reviewed; Journal article, 2024)Modern hydrodynamic simulations of core-collapse supernovae and neutron-star mergers require knowledge not only of the equilibrium properties of strongly interacting matter, but also of the system’s response to perturbations, ... -
Limiting attractors in heavy-ion collisions
(Peer reviewed; Journal article, 2024)We study universal features of the hydrodynamization process in heavy-ion collisions using QCD kinetic theory simulations for a wide range of couplings. We introduce the new concept of limiting attractors, which are obtained ... -
Heavy quark momentum diffusion coefficient during hydrodynamization via effective kinetic theory
(Peer reviewed; Journal article, 2024)In these proceedings, we compute the heavy quark momentum diffusion coefficient using QCD effective kinetic theory for a plasma going through the bottom-up thermalization scenario until approximate hydrodynamization. This ... -
Jet quenching parameter in QCD kinetic theory
(Peer reviewed; Journal article, 2024)We study the jet quenching parameter q in a nonequilibrium plasma using the QCD effective kinetic theory. We discuss subleading terms at large jet momentum p, show that our expression for q reproduces thermal results at ... -
Jet momentum broadening during initial stages in heavy-ion collisions
(Peer reviewed; Journal article, 2024)We study the jet quenching parameter qˆ in the initial pre-equilibrium stages of heavy-ion collisions using the QCD kinetic theory description of the anisotropic quark-gluon plasma. This allows us to smoothly close the gap ... -
Limiting attractors in heavy-ion collisions—The interplay between bottom-up and hydrodynamic attractors
(Peer reviewed; Journal article, 2024)In this contribution to the Quark Matter 2023 proceedings, we study the hydrodynamization process in heavy-ion collisions using QCD kinetic theory and introduce the new concept of limiting attractors. They are defined via ... -
Exercise-Induced Cardiac Troponin I Elevation Is Associated With Regional Alterations in Left Ventricular Strain in High-Troponin Responders
(Peer reviewed; Journal article, 2024)Background The implications of exercise‐induced cardiac troponin elevation in healthy individuals are unclear. This study aimed to determine if individuals with a high exercise‐induced cardiac troponin I (cTnI) response ... -
The unitary Fermi gas at large charge and large N
(Peer reviewed; Journal article, 2024)We study the unitary Fermi gas in a harmonic trapping potential starting from a microscopic theory in the limit of large charge and large number of fermion flavors N. In this regime, we present an algorithmic procedure for ... -
On the generality of energy conservation within the theory of general relativity
(Master thesis, 2024) -
An introduction to nuclear reactor analysis
(Bachelor thesis, 2024) -
Numerical studies of out-of-equilibrium processes in the early universe
(PhD thesis UiS; 834, Doctoral thesis, 2025)This thesis presents efforts to better understand out-of-equilibrium processes in the early universe. Although most of the time the universe was in thermal equilibrium, out-of-equilibrium processes are an important aspect ... -
Abdeldaim, A.H., Gretarsson, H., Day, S.J. et al. (2024) Kitaev interactions through extended superexchange pathways in the jeff=1/2 Ru<sup>3+</sup> honeycomb magnet RuP<inf>3</inf>SiO<inf>11</inf>
(Peer reviewed; Journal article, 2024)Magnetic materials are composed of the simple building blocks of magnetic moments on a crystal lattice that interact via magnetic exchange. Yet from this simplicity emerges a remarkable diversity of magnetic states. Some ... -
A Search Using GEO600 for Gravitational Waves Coincident with Fast Radio Bursts from SGR 1935+2154
(Peer reviewed; Journal article, 2024)The magnetar SGR 1935+2154 is the only known Galactic source of fast radio bursts (FRBs). FRBs from SGR 1935+2154 were first detected by the Canadian Hydrogen Intensity Mapping Experiment (CHIME)/FRB and the Survey for ...