Sökning: "non abelian"

Visar resultat 1 - 5 av 13 uppsatser innehållade orden non abelian.

  1. 1. 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

  2. 2. QFT and Spontaneous Symmetry Breaking

    Kandidat-uppsats, Uppsala universitet/Teoretisk fysik

    Författare :Shila Seyedi Seyedi; [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


    Kandidat-uppsats, Lunds universitet/Teoretisk partikelfysik

    Författare :Hristina Georgieva Hristova; [2019]
    Nyckelord :top quark mass; uncertainty; Lund Monte Carlo; Pythia; Physics and Astronomy;

    Sammanfattning : The non-Abelian QCD nature allows for pp collisions to contain gluon emissions off quarks as well as gluon branchings into further gluons — a structure that can be described by the parton shower model. In this project we present the results of the impact the shower has on the reconstruction of the W-boson and top quark masses using Pythia, the Lund Monte Carlo event generator. LÄS MER

  4. 4. Braid group statistics and exchange matrices of non-abelian anyons : with representations in Clifford algebra

    Kandidat-uppsats, KTH/Skolan för teknikvetenskap (SCI); KTH/Skolan för teknikvetenskap (SCI)

    Författare :Erik Sönnerlind; Gustav Brage; [2018]
    Nyckelord :;

    Sammanfattning : When leaving classical physics and entering the realm of quantum physics, there are many new concepts being introduced. One of the most fundamental ideas in quantum mechanics is that particles no longer have exact known positions, but instead expected values and prob- abilities. LÄS MER

  5. 5. Non-Abelian Anyons: Statistical Repulsion and Topological Quantum Computation

    Master-uppsats, KTH/Matematik (Avd.)

    Författare :Viktor Qvarfordt; [2017]
    Nyckelord :;

    Sammanfattning : As opposed to classical mechanics, quantum mechanical particles can be truly identical and lead to new and interesting phenomena. Identical particles can be of different types, determined by their exchange symmetry, which in turn gives rise to statistical repulsion. LÄS MER