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EXTERNAL FIELDS AND THE DYNAMICS OF FUNDAMENTAL FLAVOURS IN
HOLOGRAPHIC DUALS OF LARGE N GAUGE THEORIES
by
Arnab Kundu
A Dissertation Presented to the
FACULTY OF THE USC GRADUATE SCHOOL
UNIVERSITY OF SOUTHERN CALIFORNIA
In Partial Fulfillment of the
Requirements for the Degree
DOCTOR OF PHILOSOPHY
(PHYSICS)
August 2010
Copyright 2010 Arnab Kundu
Object Description
| Title | External fields and the dynamics of fundamental flavours in holographic duals of large N gauge theories |
| Author | Kundu, Arnab |
| Author email | akundu@usc.edu; arnab.kundu@gmail.com |
| Degree | Doctor of Philosophy |
| Document type | Dissertation |
| Degree program | Physics |
| School | College of Letters, Arts and Sciences |
| Date defended/completed | 2010-04-28 |
| Date submitted | 2010 |
| Restricted until | Unrestricted |
| Date published | 2010-06-29 |
| Advisor (committee chair) | Johnson, Clifford V. |
| Advisor (committee member) |
Warner, Nicholas P. Pilch, Krzysztof Haas, Stephan Bonahon, Francis |
| Abstract | Using the gauge-gravity duality we study strongly coupled dynamics of fundamental flavours in large N_c gauge theories in a constant external field. We primarily focus on the effects of an external magnetic field. We use two holographic models realized in the Type IIB and Type IIA supergravity. Our main goal is to study the dynamics of a probe brane in a given gravitational background using the Dirac-Born Infeld action. In both these models we explicitly demonstrate and discuss the magnetically induced chiral symmetry breaking effect in the flavour sector. This is consistent with the "magnetic catalysis" observed and studied in the field theory literature. We also study the associated thermodynamics and the meson spectrum and realize e.g. Zeeman splitting, stability enhancement of the mesons in the presence of an external magnetic field etc. By studying the quasinormal modes of the probe brane fluctuation in the hydrodynamic limit we also obtain an analytic dispersion relation in the presence of a magnetic field in the Type IIA model. We briefly discuss the effects of an external electric field and observe that the flavour bound states dissociate for sufficiently high electric fields and an electric current is induced. |
| Keyword | AdS/CFT correspondence; gauge-gravity duality; quark-gluon plasma |
| Language | English |
| Part of collection | University of Southern California dissertations and theses |
| Publisher (of the original version) | University of Southern California |
| Place of publication (of the original version) | Los Angeles, California |
| Publisher (of the digital version) | University of Southern California. Libraries |
| Provenance | Electronically uploaded by the author |
| Type | texts |
| Legacy record ID | usctheses-m3164 |
| Rights | Kundu, Arnab |
| Repository name | Libraries, University of Southern California |
| Repository address | Los Angeles, California |
| Repository email | http://www.usc.edu/isd/libraries/services/ask_a_librarian/email/ |
| Filename | etd-Kundu-3739 |
| Archival file | uscthesesreloadpub_Volume26/etd-Kundu-3739.pdf |
Description
| Title | Page 1 |
| Full text | EXTERNAL FIELDS AND THE DYNAMICS OF FUNDAMENTAL FLAVOURS IN HOLOGRAPHIC DUALS OF LARGE N GAUGE THEORIES by Arnab Kundu A Dissertation Presented to the FACULTY OF THE USC GRADUATE SCHOOL UNIVERSITY OF SOUTHERN CALIFORNIA In Partial Fulfillment of the Requirements for the Degree DOCTOR OF PHILOSOPHY (PHYSICS) August 2010 Copyright 2010 Arnab Kundu |
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