Sökning: "Quantum Field Theory"

Visar resultat 11 - 15 av 94 uppsatser innehållade orden Quantum Field Theory.

  1. 11. Path Integrals in Quantum Mechanics and Low-Dimensional QFT

    Kandidat-uppsats, Uppsala universitet/Teoretisk fysik

    Författare :Johanna Adbo; [2023]
    Nyckelord :QFT; path integrals; quantum mechanics; kvantfältteori; vägintegraler; kvantmekanik;

    Sammanfattning : The focus of this thesis is to introduce the path integral and some of its applications. One interpretation of quantum mechanics is that a microscopic system which moves from an initial- to a final state moves through each possible intermediate state. LÄS MER

  3. 12. Error propagation in nuclear models

    Kandidat-uppsats, Lunds universitet/Matematisk fysik; Lunds universitet/Fysiska institutionen

    Författare :Artis Mucenieks; [2023]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : In this thesis we perform error analysis of a nuclear model based on density-functional theory developed in Lund. The Lund model allows us to perform calculations of nuclear spectra more efficiently by constructing a simple effective Hamiltonian reproducing the quadrupole deformation and pairing interaction strength parameters of a spherical Hartree-Fock reference functional. LÄS MER

  4. 13. Path integrals in Quantum Mechanics and their application to low-dimensional supersymmetry

    Kandidat-uppsats, Uppsala universitet/Teoretisk fysik

    Författare :Gaétan Kaouadji; [2023]
    Nyckelord :Path integrals quantum mechanics quantum field theory supersymmetry;

    Sammanfattning : This report aims to give an insight to the path integral formalism in quantum mechanics. After explaining the kernel's construction, some of its properties and ways to compute it, we see how it relates to the Schrödinger picture. Moreover, we see how its representation can change if it is defined in the space, momentum, time or energy space. LÄS MER

  5. 14. Profinite groups

    Master-uppsats, Lunds universitet/Matematik (naturvetenskapliga fakulteten); Lunds universitet/Matematikcentrum

    Författare :Juan Moreno Poncela; [2023]
    Nyckelord :Profinite Groups; Infinite Galois Theory; Mathematics and Statistics;

    Sammanfattning : This thesis provides a comprehensive study of profinite groups, which are fascinating mathematical objects that have attracted significant interest in modern algebraic research. Profinite groups are infinite generalizations of finite groups and share many similarities with them. LÄS MER

  7. 15. Scattering of Charge Carriers in 2+1-Dimensional Quantum Field Theory

    Master-uppsats, Karlstads universitet/Institutionen för ingenjörsvetenskap och fysik (from 2013)

    Författare :David Savinainen; [2023]
    Nyckelord :Quantum field theory; Scattering; S-matrix; Hannesdottir; Schwartz;

    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