Browsing Institutt for fysikk by Title

Now showing items 1878-1897 of 2655

    • Quantitative Polychromatic X-Ray Computed Tomography - Experiments and Simulations 

      Tekseth, Kim Robert Bjørk (Master thesis, 2018)
      X-ray Computed Tomography (CT) is an extensively used technique conventionally utilizing either absorption-contrast or phase-contrast to non-destructively image the internal structures of objects. While CT instruments using ...

    • Quantitative scanning transmission electron microscopy studies on heterostructured GaAs nanowires 

      Kauko, Hanne (Doktoravhandlinger ved NTNU, 1503-8181; 2013:369, Doctoral thesis, 2013)
      This thesis presents a quantitative high-angle annular dark eld scanning transmission electron microscopy (HAADF STEM) study on heterostructured GaAs-based nanowires (NWs). Quantitative HAADF STEM was employed to investigate ...

    • Quantitative strain analysis of InAs/GaAs quantum dot materials 

      Vullum, Per Erik; Nord, Magnus Kristofer; Vatanparast, Maryam; Thomassen, Sedsel Fretheim; Boothroyd, Chris; Holmestad, Randi; Fimland, Bjørn-Ove; Reenaas, Turid Worren (Journal article; Peer reviewed, 2017)
      Geometric phase analysis has been applied to high resolution aberration corrected (scanning) transmission electron microscopy images of InAs/GaAs quantum dot (QD) materials. We show quantitatively how the lattice mismatch ...

    • Quantitative studies of clustering and precipitation in Al-Mg-Si(-Cu) alloys 

      Torsæter, Malin (Doktoravhandlinger ved NTNU, 1503-8181; 2011:212, Doctoral thesis, 2011)
      In the present work, the clustering and precipitation reactions in age hardenable Al-Mg- Si(-Cu) (6xxx) alloys have been studied by atom probe tomography (APT), transmission electron microscopy (TEM) related methods and ...

    • Quantitative Susceptibility Mapping Reproducibility with 7T Ultra-High Field MRI 

      Vik, Martin Rimbereid (Master thesis, 2022)
      Kvantitativ susceptibilitet (QSM) har blitt foreslått som en lovende metode for ikke-invasiv in vivo bestemmelse av romlig fordeling av magnetisk susceptibilitet. Magnetisk susceptibilitet er en karakteristisk egenskap ved ...

    • Quantum Chromodynamics in Strong Magnetic Fields with Isospin Chemical Potential 

      Grønli, Martin Spillum (Master thesis, 2021)
      I denne avhandlingen studerer vi kvantekromodynamikk (QCD) med to kvarktyper ved lave energier. Vi inkluderer et eksternt magnetfelt og et endelig isospinn kjemisk potensial. Under disse forholdene vil grunntilstanden til ...

    • Quantum corrections to slow-roll inflation: scalar and tensor modes 

      Andersen, Jens Oluf; Tranberg, Anders; Eriksson, Magdalena Britt (Peer reviewed; Journal article, 2021)
      Inflation is often described through the dynamics of a scalar field, slow-rolling in a suitable potential. Ultimately, this inflaton must be identified with the expectation value of a quantum field, evolving in a quantum ...

    • Quantum Error Mitigation for near-future Quantum Computation 

      Rokne, Anders Håøy (Master thesis, 2021)
      Kvantedatamaskiner har potensiale til å kunne løse spesifikke beregningsproblemer eksponentielt raskere enn noen klassisk datamaskin er i stand til. I nærliggende fremtid er derimot kvantedatamaskiner begrensede når det ...

    • Quantum fluctuations in the order parameter of quantum skyrmion crystals 

      Mæland, Kristian; Sudbø, Asle (Peer reviewed; Journal article, 2022)
      Traditionally, skyrmions are treated as continuum magnetic textures of classical spins with a well-defined topological skyrmion number. Owing to their topological protection, skyrmions have attracted great interest as ...

    • Quantum gravity phenomenology at the dawn of the multi-messenger era—A review 

      Addazi, A.; Alvarez-Muniz, J.; Alves Batista, Batista; Amelino-Camelia, G.; Antonelli, V.; Arzano, M.; Asorey, M.; Atteia, J.-L.; Bahamonde, S.; Bajardi, F.; Ballesteros, A.; Baret, B.; Barreiros, D.M.; Basilakos, S.; Benisty, D.; Birnholtz, O.; Blanco-Pillado, J.J.; Blas, D.; Bolmont, J.; Boncioli, D.; Bosso, P.; Calcagni, G.; Capozziello, S.; Carmona, J.M.; Cerci, S.; Chernyakova, M.; Clesse, S.; Coelho, J.A.B.; Colak, S.M.; Cortes, J.L.; Das, S.; D'Esposito, V.; Demirci, M.; Di Luca, Luca; di Matteo, Matteo; Dimitrijevic, D.; Djordjevic, G.; Prester, D. Dominis; Eichhorn, A.; Ellis, J.; Escamilla-Rivera, C.; Fabiano, G.; Franchino-Viñas, S.A.; Frassino, A.M.; Frattulillo, D.; Funk, S.; Fuster, A.; Gamboa, J.; Gent, A.; Gergely, L.A.; Giammarchi, M.; Giesel, K.; Glicenstein, J.-F.; Gracia-Bondía, J.; Gracia-Ruiz, R.; Gubitosi, G.; Guendelman, E.I.; Gutierrez-Sagredo, I.; Haegel, L.; Heefer, S.; Held, A.; Herranz, F.J.; Hinderer, T.; Illana, J.I.; Ioannisian, A.; Jetzer, P.; Joaquim, F.R.; Kampert, K.-H.; Uysal, A. Karasu; Katori, T.; Kazarian, N.; Kerszberg, D.; Kowalski-Glikman, J.; Kuroyanagi, S.; Lämmerzahl, C.; Said, J. Levi; Liberati, S.; Lim, E.; Lobo, I.P.; López-Moya, M.; Luciano, G.G.; Manganaro, M.; Marcianò, A.; Martín-Moruno, P.; Martinez, Manel; Martinez, Mario; Martínez-Huerta, H.; Martínez-Miravé, P.; Masip, M.; Mattingly, D.; Mavromatos, N.; Mazumdar, A.; Méndez, F.; Mercati, F.; Micanovic, S.; Mielczarek, J.; Miller, A.L.; Milosevic, M.; Minic, D.; Miramonti, L.; Mitsou, V.A.; Moniz, P.; Mukherjee, S.; Nardini, Germano; Navas, S.; Niechciol, M.; Nielsen, A.B.; Obers, N.A.; Oikonomou, Foteini; Oriti, D.; Paganini, C.F.; Palomares-Ruiz, S.; Pasechnik, R.; Pasic, V.; Pérez de los Heros, de; Pfeifer, C.; Pieroni, M.; Piran, T.; Platania, A.; Rastgoo, S.; Relancio, J.J.; Reyes, M.A.; Ricciardone, Angelo; Risse, M.; Frias, M.D. Rodriguez; Rosati, G.; Rubiera-Garcia, D.; Sahlmann, H.; Sakellariadou, M.; Salamida, F.; Saridakis, E.N.; Satunin, P.; Schiffer, M.; Schüssler, F.; Sigl, G.; Sitarek, J.; Peracaula, J. Solà; Sopuerta, C.F.; Sotiriou, T.P.; Spurio, M.; Staicova, D.; Stergioulas, N.; Stoica, S.; Strišković, J.; Stuttard, T.; Cerci, D. Sunar; Tavakoli, Y.; Ternes, C.A.; Terzić, T.; Thiemann, T.; Tinyakov, P.; Torri, M.D.C.; Tórtola, M.; Trimarelli, C.; Trześniewski, T.; Tureanu, A.; Urban, Federico; Vagenas, E.C.; Vernieri, D.; Vitagliano, V.; Wallet, J.-C.; Zornoza, J.D. (Peer reviewed; Journal article, 2022)
      The exploration of the universe has recently entered a new era thanks to the multi-messenger paradigm, characterized by a continuous increase in the quantity and quality of experimental data that is obtained by the detection ...

    • Quantum Ground State Control in Superconductor-Silicene Structures: 0-π transitions, φ₀-junctions, and Majorana bound states 

      Kuzmanovskii, Dushko; Linder, Jacob; Black-Schaffer, Annica (Journal article, 2016)
      We demonstrate theoretically that proximity-induced superconductivity in silicene offers the possibility to exert strong quantum ground state control. We show that electrically controlled 0-π transitions occur in Josephson ...

    • Quantum Machine Learning for Variational Quantum Algorithms 

      Uthayamoorthy, VIroshaan (Master thesis, 2022)
      Denne masteroppgaven introduserer konsepter innen maskinlæring og kvante-maskinlæring. Spesiell fokus vil bli ilagt variasjonelle kvantealgorithmer hvor parametre i kvantekretser blir optimert. Hvordan disse kretsene trenes ...

    • Quantum Monte Carlo Simulations of Drag Interaction in the Superfluid Phase of the 3-Component Bose-Hubbard Model 

      Erlandsen, Eirik (Master thesis, 2018)
      We study Andreev-Bashkin drag interactions between the superflow of different components in the superfluid phase of a three-component Bose-Hubbard model without component-mixing interactions, relevant for cold atom systems ...

    • QUANTUM PHASE TRANSITION IN SPIN-ORBIT COUPLED BOSE-EINSTEIN CONDENSATES IN OPTICAL LATTICES OF DIFFERENT GEOMETRIES 

      Awoga, Oladunjoye Aina (Master thesis, 2014)
      Mott insulator to superfluid phase transitions and unconventional superfluid phases in spin-orbit coupled Bose-Einstein condensate in one dimensional, square and hexagonal optical lattices are investigated using decoupling ...

    • Quantum Phenomena at Magnetic Insulator-Normal Metal Interfaces 

      Fjærbu, Eirik Løhaugen (Doctoral theses at NTNU;2018:249, Doctoral thesis, 2018)
      Electrons carry an intrinsic angular momentum that we call spin. Spintronics is a field of research which aims to create new computer technology by making use of the electron spin. This thesis presents the results of four ...

    • Quantum Quenches in Non-centrosymmetric Superconductors 

      Taraldsen, Øyvind Muldal (Master thesis, 2021)
      I denne oppgaven undersøker vi dynamikken kort tid etter at et system har blitt forstyrret i en modell for ikke-sentrosymmetriske superledere. Spesifikt ser vi på ikke-sentrosymmetriske materialer der spinn-banekobling er ...

    • Quantum topological phase transitions in skyrmion crystals 

      Mæland, Kristian; Sudbø, Asle (Peer reviewed; Journal article, 2022)
      Topological order is important in many aspects of condensed matter physics and has been extended to bosonic systems. In this Letter we report on the nontrivial topology of the magnon bands in two distinct quantum skyrmion ...

    • Quantum transport and proximity effects in unconventional superconducting hybrid systems 

      Linder, Jacob (Doktoravhandlinger ved NTNU, 1503-8181; 2009:43, Doctoral thesis, 2009)
       This thesis presents some of the main findings from twenty-five research articles. These papers may roughly be categorized into three fields: i) Proximity structures of superconductors and ferromagnets, ii) Interplay ...

    • Quantum Transport in Hybrid Structures 

      Enoksen, Henrik (Doktoravhandlinger ved NTNU, 1503-8181; 2013:231, Doctoral thesis, 2013)
      This thesis presents the findings of four research papers on two topics in condensed-matter physics. Namely: i) The interplay between superconductivity and magnetism in Josephson junctions, and ii) current-driven domain ...

    • Quark and Hybrid Stars with the Quark-Meson Model — Including Preliminaries to Compact Stars 

      Sletmoen, Herman (Master thesis, 2022)
      Ifølge kvantekromodynamikk bryter innesperrede kvarker fri fra hadroner til en tilstand av uavgrenset kvarkmaterie ved høy tetthet. Nylige observasjoner av de massive 2 M_☉-pulsarene PSR J1614-2230, PSR J0348+0432 og PSR ...