Blar i Department of Mathematics and Physics (TN-IMF) på tittel
Viser treff 176-195 av 294
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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 ... -
«Open Middle Math», dybdelæring & positive holdninger i matematikk
(Masteroppgave/UIS-HF-IMF/2020;, Master thesis, 2019-07)Som både lektorstudent og deltidsarbeidene i videregående skole er det mye fokus på hvordan lærere skal forberede seg i møte med fagfornyelsen. Dybdelæring er et sentralt begrep i fagfornyelsen. Motivasjonen for denne ... -
Open-quantum-systems approach to in-medium heavy quarkonium dynamics
(Peer reviewed; Journal article, 2023)Heavy quarkonium continues to play a central role in the study of nuclear matter under extremes of temperature and density in relativistic heavy-ion collisions. In this talk I report on recent developments in the theoretical ... -
Optimisation of Thimble simulations and quantum dynamics of multiple fields in real time
(Peer reviewed; Journal article, 2022)We apply the Generalised Thimble approach to the computation of exact path integrals and correlators in real-time quantum field theory. We first investigate the details of the numerical implementation and ways of optimizing ... -
Order parameter dynamics of the non-linear sigma model in the large N limit
(Peer reviewed; Journal article, 2020)We study non-equilibrium order parameter dynamics of the non-linear sigma model in the large N limit, using Keldysh formalism. We provide a scheme for obtaining stable numerical solution of the Keldysh saddle point equations ... -
Overall and relative Survival for Cancer Patients
(Masteroppgave/UIS-TN-IMF/2019;, Master thesis, 2019-06)In this thesis, basic concepts of survival analysis such as censoring, truncation and survival functions are described. Measures of survival ( i.e overall survival, net survival and relative survival ratio) and ... -
Paradokser i sannsynlighetsregning og statistikk, og bruk av disse i undervisningssammenheng
(Master thesis, 2023)I denne oppgaven presenteres ulike paradokser innenfor sannsynlighetsregning og statistikk. Et paradoks er en påstand som er sann, men som virker absurd eller selvmotsigende. Vi kan møte på mange typer paradokser i ... -
Perturbative thermal QCD: Formalism and applications
(Peer reviewed; Journal article, 2020)In this review article, we discuss the current status and future prospects of perturbation theory as a means of studying the equilibrium thermodynamic and near-equilibrium transport properties of deconfined QCD matter. We ...