Blar i Department of Mathematics and Physics (TN-IMF) på tittel
Viser treff 169-188 av 294
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New benchmarks in the modelling of X-ray atomic form factors
(Peer reviewed; Journal article, 2023)Analytical representations of X-ray atomic form factor data have been determined. The original data, f0(s;Z), are reproduced to a high degree of accuracy. The mean absolute errors calculated for all s = sin θ/λ and Z values ... -
New G2-conifolds in M-theory and their field theory interpretation
(Peer reviewed; Journal article, 2021)A recent theorem of Foscolo-Haskins-Nordström [1] which constructs complete G2-holonomy orbifolds from circle bundles over Calabi-Yau cones can be utilised to construct and investigate a large class of generalisations of ... -
New tests for trend in time censored recurrent event data
(Peer reviewed; Journal article, 2024-01)We consider testing for trend in recurrent event data. More precisely, for such data we consider testing of the null hypothesis of data coming from a renewal process. The new tests are essentially obtained by considering ... -
New tests for trend in time censored recurrent event data
(Peer reviewed; Journal article, 2024)We consider testing for trend in recurrent event data. More precisely, for such data we consider testing of the null hypothesis of data coming from a renewal process. The new tests are essentially obtained by considering ... -
A new variational discretization technique for initial value problems bypassing governing equations
(Peer reviewed; Journal article, 2023-03)Motivated by the fact that both the classical and quantum description of nature rest on causality and a variational principle, we develop a novel and highly versatile discretization prescription for classical initial value ... -
Nil-Killing vector fields and Kundt structures
(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 ... -
No room to hide: implications of cosmic-ray upscattering for GeV-scale dark matter
(Peer reviewed; Journal article, 2023)The irreducible upscattering of cold dark matter by cosmic rays opens up the intriguing possibility of detecting even light dark matter in conventional direct detection experiments or underground neutrino detectors. The ... -
Noether currents of locally equivalent symmetries
(Peer reviewed; Journal article, 2020)Local symmetry transformations play an important role for establishing the existence and form of a conserved (Noether) current in systems with a global continuous symmetry. We explain how this fact leads to the existence ... -
Non-equilibrium quantum field dynamics in the early Universe
(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 ... -
Nonequilibrium attractor in high-temperature QCD plasmas
(Peer reviewed; Journal article, 2020)We establish the existence of a far-from-equilibrium attractor in weakly coupled gauge theory undergoing one-dimensional Bjorken expansion. We demonstrate that the resulting far-from-equilibrium evolution is insensitive ... -
Nonperturbative analysis of the electroweak phase transition in the two Higgs doublet model
(Journal article; Peer reviewed, 2018-11)We perform a nonperturbative study of the electroweak phase transition (EWPT) in the two Higgs doublet model (2HDM) by deriving a dimensionally reduced high-temperature effective theory for the model, and matching to known ... -
Nonrelativistic effective field theories with enhanced symmetries and soft behavior
(Peer reviewed; Journal article, 2022)We systematically explore the landscape of nonrelativistic effective field theories with a local S-matrix and enhanced symmetries and soft behavior. The exploration is carried out using both conventional quantum field ... -
On a class of integrable systems of Monge-Ampère type
(Journal article; Peer reviewed, 2017-06)We investigate a class of multi-dimensional two-component systems of Monge-Ampère type that can be viewed as generalisations of heavenly type equations appearing in a self-dual Ricci-flat geometry. Based on the Jordan-Kronecker ... -
On Phonon Lasing
(Bachelor thesis, 2022)An article titled "A Phonon Laser", reported an experiment. Where a Mg+ ion was placed in a harmonic potential. It was pushed by two lasers, pointing in the same direction. One laser pushed when the Mg+ ion went towards ... -
On Universal Black Holes
(Peer reviewed; Journal article, 2020)Recent results on universal black holes in d dimensions are summarized. These are static metrics with an isotropy-irreducible homogeneous base space which can be consistently employed to construct solutions to virtually ... -
On-shell recursion relations for nonrelativistic effective field theories
(Peer reviewed; Journal article, 2021-10)We derive on-shell recursion relations for nonrelativistic effective field theories (EFTs) with enhanced soft limits. The recursion relations are illustrated through analytic calculation of tree-level scattering amplitudes ... -
Opacity dependence of elliptic flow in kinetic theory
(Peer reviewed; Journal article, 2019-09)The observation of large azimuthal anisotropies vn in the particle spectra of proton–proton (pp) and proton–nucleus (pA) collisions challenges fluid dynamic interpretations of vn, as it remains unclear how small collision ... -
Open Middle Math og dybdelæring i Matematikk
(Master thesis, 2022)Denne oppgaven trekker frem undervisningskonseptet Open Middle Math (Kaplinsky, Open Middle Math, 2020) og drøfter om dette konseptet bidrar til dybdelæring i matematikk. For å besvare dette spørsmålet er det gjennomført ... -
"Open Middle Math" og dets bidrag til dybdelæring i matematikk
(Master thesis, 2022)Dette prosjektet baserer seg på Robert Kaplinskys (Kaplinsky, 2020) teori om «Open Middle Math», og har som mål å undersøke om undervisning med dette kan bidra til dybdelæring hos elever. I forbindelse med prosjektet ble ... -
«Open Middle Math» og dets bidrag til undervisning i matematikk
(Master thesis, 2021)I denne masteroppgaven er det foretatt innhenting av datamateriale gjennom elevers oppgaveløsning i rammeverket «Open Middle Math». Målet ved observasjon og utprøving av oppgavetypen har vært å se om det kan være et godt ...