Aspects of Chiral Symmetry Breaking in Gauge Field Theories
Kocić, Aleksandar
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https://hdl.handle.net/2142/77414
Description
Title
Aspects of Chiral Symmetry Breaking in Gauge Field Theories
Author(s)
Kocić, Aleksandar
Issue Date
1987
Doctoral Committee Chair(s)
Kogut, John,
Department of Study
Physics
Discipline
Physics
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Physics, Elementary Particles and High Energy
Language
eng
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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