Essays about: "perturbative renormalization"

Found 2 essays containing the words perturbative renormalization.

1. 1. Yang-Mills Condensates in Cosmology

   University essay from Lunds universitet/Teoretisk partikelfysik - Geonomgår omorganisation

   Author : Nikolay Gornov; [2016]
   Keywords : Yang-Mills; dark energy; cosmological constant; FRG; functional renormalization group; Physics and Astronomy;

   Abstract : The cosmological constant is one of bigger mysteries in modern fundamental physics and cosmology. In this work we investigate one of the possible interpretations for the cosmological constant. READ MORE

3. 2. Renormalization in Field Theories

   University essay from Uppsala universitet/Teoretisk fysik

   Author : Alexander Söderberg; [2015]
   Keywords : 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;

   Abstract : 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. READ MORE