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    • 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 ...

    • Quark and pion condensates at finite isospin density in chiral perturbation theory 

      Adhikari, Prabal; Andersen, Jens Oluf (Peer reviewed; Journal article, 2020)
      I denne artikkelen vurderer vi to-smak QCD ved null temperatur og endelig isospin kjemisk potensiale μJegμI ved hjelp av en modelluavhengig analyse innen chiral forstyrrelsesteori i neste ledende rekkefølge. Vi beregner ...

    • Quark, Hybrid, and Unified Hybrid Stars with the Quark-Meson Model 

      Andresen, Carl Fredrik (Master thesis, 2023)
      Vi beskriver kalde, sfærisk-symmetriske, kompakte stjerner med kvark-meson-modellen med to kvarker. Til å begynne med utleder vi relevante termodynamiske størrelser fra kvantefeltteori ved endelig kjemisk potensial. Vi ...

    • The Quark-meson model in a magnetic field 

      Grøver, Sigurd Loe (Master thesis, 2017)
      In this thesis we study the chiral phase transition of two-flavor QCD, through the use of the quark-meson model. The effect of a magnetic field on the transition is studied, at finite temperature and baryon chemical ...

    • Quasi-16-day period oscillations observed in middle atmospheric ozone and temperature in Antarctica 

      Demissie, Teferi Dejene; Kleinknecht, Nora; Hibbins, Robert; Espy, Patrick Joseph; Straub, Corinne (Journal article; Peer reviewed, 2013)
      Nightly averaged mesospheric temperature derived from the hydroxyl nightglow at Rothera station (67°34' S, 68°08' W) and nightly midnight measurements of ozone mixing ratio obtained from Troll station (72°01' S, 2°32' E) ...