Aspects of chiral symmetry breaking in gauge field theories
Kocić, Aleksandar
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https://hdl.handle.net/2142/25442
Description
Title
Aspects of chiral symmetry breaking in gauge field theories
Author(s)
Kocić, Aleksandar
Issue Date
1987
Doctoral Committee Chair(s)
Kogut, John B.
Department of Study
Physics
Discipline
Physics
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
chiral symmetry breaking
gauge field theories
dynamical mass generation
bound state formation
Language
en
Abstract
In this thesis we study the mechanisms of spontaneous chiral symmetry breaking
in gauge field theories. We focus on the general relationship between dynamical mass
generation and the formation of bound states in theories not having elementary scalars.
In that context we demonstrate that the fermion-pair condensate offers a good qualitative
description of the vacuum in the strong coupling regime of chiral theories. We
analyze three types of interaction: short-range, confining and long-range unconfining,
and show that three different mechanisms cause the condensation. The analysis is extended
to finite temperatures and densities where we study chiral symmetry restoration.
Finally, we investigate the interplay between chiral symmetry, supersymmetry and finite
temperature effects in a supersymmetric extension of QED in three dimensions.
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