Coulomb Correlations in Equilibrium and Nonequilibrium Many -Fermion Systems

The importance of the field of Condensed Matter Physics can hardly be overstated. It deals with matter at everyday energies and with length and times scales in which complex processes are able to occur. It is a field in which much experimental and theoretical effort has been invested. New experimental techniques continue to shift the boundaries of this diverse field. Yet the theoretical tools that have been brought to bear on these problems have had a distinctly stale flavor. Only recently have theorists woken up to the possibility that modern techniques developed mainly by particle theorists could be fruitfully applied to study these problems. The aim of this thesis is therefore to study important physical phenomena in Condensed Matter Physics using tools that are powerful enough to be able to probe new physics. In the first part of this thesis I have shown how transient Many-Body phenomena may be studied using nonequilibrium Green functions. In the second half I have developed a new nonpertubative tool called bosonization and applied it to study the all-important question at the frontier of Condensed Matter Theory namely when does Fermi liquid theory break down and when it does what new physical principles need to be invoked in order to understand physical phenomena in this new and uncharted regime.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Physics

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2015

Author dc:creator

• Setlur, Girish Sampath

Contributors dc:contributor

• Chang, Yia-Chung

• Engineering, Electronics and Electrical

Language dc:language

eng

Identifier

(MiAaPQ)AAI9953133

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/80675