Sökning: "renormalization in field theories"

Hittade 2 uppsatser innehållade orden renormalization in field theories.

1. 1. 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 omorganisation

   Författare :Hector Tiblom; [2023]
   Nyckelord :Grand Unification; GUT; trinification; spontaneous symmetry breaking; effective field theory; EFT; high-scale matching; renormalization group flow; Physics and Astronomy;

   Sammanfattning : 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. 2. Renormalization in Field Theories

   L3-uppsats, Uppsala universitet/Teoretisk fysik

   Författare :Alexander Söderberg; [2015]
   Nyckelord :renormalization in field theories; renormalization; quantum field theories; quantum field theory; quantum mechanics; quantum physics; quantum; physics; mechanics; field theory; theory; theories; fields; field; regularization; dimensional regularization; dimensional; perturbative; perturbative renormalization; wilsonian approach; wilsonian; approach; momentum cutoff; momentum; cutoff; callan; symanzik; equation; callan symanzik equation; coleman; weinberg; model; potential; effective; coleman-weinberg potential; beta function; beta; non abelian; gauge; non abelian gauge theory; non abelian gauge theories; qed; quantum electrodynamics; electrodynamics; qcd; quantum chromodynamics; chromodynamics;

   Sammanfattning : Several different approaches to renormalization are studied. The Callan-Symanzik equation is derived and we study its beta functions. An effective potential for the Coleman-Weinberg model is studied to find that the beta function is positive and that spontaneous symmetry breaking will occur if we expand around the classical field. LÄS MER