Sökning: "Gauge Theory"
Visar resultat 1 - 5 av 69 uppsatser innehållade orden Gauge Theory.
1. Z2-Gauge Theory with Matter : Dispersive behaviour of a dimer in a 1+1-dimensional lattice
Kandidat-uppsats, Karlstads universitet/Institutionen för ingenjörsvetenskap och fysik (from 2013)Sammanfattning : The intention with this thesis is to investigate a dimer in a spin chain. Inorder to do that, a model from Z2-gauge theory is taken as the theoretical motivation to construct a discrete lattice with Ising spin properties. A dimer is then allowed to exist indirectly in the empty space between sites. LÄS MER
2. Phenomenological exploration of flavored Grand Unification through high-scale matching and renormalization group flow
Master-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Teoretisk partikelfysik - Geonomgår omorganisationSammanfattning : The phenomenological success of the Standard Model (SM), and its unification of the electromagnetic and weak forces has inspired the search for a Grand Unified Theory (GUT), that dynamically reduces to the SM at low energies. In this work, we consider one such GUT, based on the trinification model [SU(3)]³ with an additional local SU(2) family symmetry, that is then broken directly to the gauge symmetry group of the SM. LÄS MER
3. Asymptotic Symmetries and Dressed States in QED and QCD
Master-uppsats, Stockholms universitet/FysikumSammanfattning : Infrared divergences arising in theories with massless gauge bosons have been shown to cancel in scattering amplitudes when using dressed states constructed from the Faddeev- Kulish approach to the asymptotic states. It has been established that these states are closely related to asymptotic symmetries of the theory, that is, non-vanishing gauge trans- formations at the asymptotic boundary. LÄS MER
4. Scattering of Charge Carriers in 2+1-Dimensional Quantum Field Theory
Master-uppsats, Karlstads universitet/Institutionen för ingenjörsvetenskap och fysik (from 2013)Sammanfattning : The aim of this thesis is to examine the hard $S$-matrix for QED and QCD, due to Hannesdottir and Schwartz [1], both recreating known results, and finding new results in lower dimensions. Electrons by themselves are not gauge invariant, and in the massless limit do not give finite $S$-matrix elements for individual processes; one needs to add together seemingly arbitrary combinations of diagrams in order to be able to calculate the scattering cross-section. LÄS MER
5. Stridssätt: Samtliga : Hur och varför Sverige valde AK 4 och 7.62x51
Kandidat-uppsats, FörsvarshögskolanSammanfattning : This study concerns the development and trials of assault rifles/battle rifles in Sweden during 1959-1964, which led to the adoption of Automatkarbin 4(Automatic Carbine 4) chambered in 7.62x51. LÄS MER