Sökning: "non abelian gauge theory"

Visar resultat 1 - 5 av 7 uppsatser innehållade orden non abelian gauge theory.

  1. 1. Asymptotic Symmetries and Dressed States in QED and QCD

    Master-uppsats, Stockholms universitet/Fysikum

    Författare :Saimeng Zhou; [2023]
    Nyckelord :Dressed states; Large gauge transformation; Faddeev-Kulish formalism; Generalized coherent state operator; Wilson line; Infrared divergence; Asymptotic Hamiltonian; QED; QCD;

    Sammanfattning : 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

  3. 2. Gribov ambiguities in non-Abelian gauge theories

    Kandidat-uppsats, Lunds universitet/Teoretisk partikelfysik - Geonomgår omorganisation

    Författare :Fredrik Granström; [2021]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : This thesis investigates the quantization of field theories using the functional integral formalism. Gauge invariance necessitates a gauge-fixing procedure that chooses a unique field configuration from each gauge orbit. LÄS MER

  4. 3. Generalized Abelian Gauge Theory & Generalized Global Symmetry

    Master-uppsats, Uppsala universitet/Teoretisk fysik

    Författare :Emil Hössjer; [2020]
    Nyckelord :Differential characters; Wilson lines; generalized global symmetry; BF theory; Maxwell theory; spontaneous symmetry breaking; intersection number; selection rules; Noether theorem; sphere bundle; t Hooft operator;

    Sammanfattning : We study Cheeger-Simons differential characters in order to define higher form U(1) gauge fields and their Wilson lines. We then go on to define generalized global symmetries. This is a topological formulation of symmetries which has interesting consequences when the charged operators extend through space. LÄS MER

  5. 4. QFT and Spontaneous Symmetry Breaking

    Kandidat-uppsats, Uppsala universitet/Teoretisk fysik

    Författare :Sheila Chauwinoir; [2020]
    Nyckelord :quantum field theory; abelian and non-abelian gauge theories; quantum electrodynamics; quantum chromodynamics; electroweak interaction; spontaneous symmetry breaking; higgs mechanism;

    Sammanfattning : The aim of this project is to understand the structure of the Standard Model of the particle physics. Therefore quantum field theories (QFT) are studied in the both cases of abelian and non-abelian gauge theories i.e. quantum electrodynamics (QED), quantum chromodynamics (QCD) and electroweak interaction are reviewed. LÄS MER

  7. 5. Calculating the Mass of Magnetic Monopoles in Non-Abelian Gauge Theories

    Kandidat-uppsats, Uppsala universitet/Teoretisk fysik

    Författare :Måns Holmberg; [2016]
    Nyckelord :Magnetic monopole; Mass; Gauge theory; Non-Abelian group; Dirac monopole; t Hooft-Polyakov monopole; Georgi-Glashow model; Dyon; BPS-limit; Numerical calculation;

    Sammanfattning : .... LÄS MER