{"id":{"repo_id":"soton","oai_identifier":"oai:eprints.soton.ac.uk:72370"},"canonical_url":"https://search.dev.ndltd.org/etd/soton/oai:eprints.soton.ac.uk:72370","repository":{"repo_id":"soton","name":"University of Southampton","base_url":"https://eprints.soton.ac.uk/cgi/oai2"},"display":{"title":"Aspects of strongly-coupled field theory from gauge-gravity duality","abstract":"The issue of calculating at strong coupling is a hard problem in physics. The discovery of gauge-gravity duality at the end of the Twentieth Century provides a novel means of calculating in a large-N gauge theory at strong coupling. In this thesis we apply the method of gauge-gravity duality to a variety of questions. Firstly we review the string theory background material and then introduce the gauge-gravity duality. We discuss the procedure for adding fundamental representation matter to gravity duals. We present a method for calculating the quasinormal frequencies associated to mesonlike excitations in non-zero temperature gravity duals and apply it to excitations of bosonic and fermionic type. We study the thermal phase transition in a somewhat QCD-like gravity dual deformed by the presence of a relevant operator and find a plausible transition between a QCD-like confining phase and a high temperature phase which is just the generic black hole geometry. Finally we examine the effect of chemical potential on the behaviour of fundamental representation matter in a gravity dual and look for superconductivity-like behaviour.","abstract_html":"The issue of calculating at strong coupling is a hard problem in physics. The discovery of gauge-gravity duality at the end of the Twentieth Century provides a novel means of calculating in a large-N gauge theory at strong coupling. In this thesis we apply the method of gauge-gravity duality to a variety of questions. Firstly we review the string theory background material and then introduce the gauge-gravity duality. We discuss the procedure for adding fundamental representation matter to gravity duals. We present a method for calculating the quasinormal frequencies associated to mesonlike excitations in non-zero temperature gravity duals and apply it to excitations of bosonic and fermionic type. We study the thermal phase transition in a somewhat QCD-like gravity dual deformed by the presence of a relevant operator and find a plausible transition between a QCD-like confining phase and a high temperature phase which is just the generic black hole geometry. Finally we examine the effect of chemical potential on the behaviour of fundamental representation matter in a gravity dual and look for superconductivity-like behaviour.","abstract_has_math":false,"creators":["Threlfall, Edward James"],"institution":"University of Southampton","degree_name":"Ph.D.","degree_level":"doctoral","degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["Evans, N."],"committee_chairs":[],"committee_members":[],"year":2009,"date_issued":"2009-09","date_published":"2009-09","updated_at":"2026-07-24T04:36:10Z","subjects":[],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":null,"outbound_label":null,"outbound_source":null},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Evans, N."]},{"key":"dc:creator","label":"Author","values":["Threlfall, Edward James"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2009-09"]},{"key":"dc:date.issued","label":"Date","values":["2009-09"]},{"key":"dc:publisher.commercial","label":"Dc Publisher Commercial","values":["University of Southampton"]},{"key":"dc:publisher.department","label":"Dc Publisher Department","values":["High Energy Physics (pre 2011 reorg)","School of Physics & Astronomy"]},{"key":"dc:publisher.institution","label":"Dc Publisher Institution","values":["University of Southampton"]},{"key":"dc:relation.isreferencedby","label":"Dc Relation Isreferencedby","values":["https://eprints.soton.ac.uk/72370/"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]},{"key":"dc:type.qualificationlevel","label":"Dc Type Qualificationlevel","values":["doctoral"]},{"key":"dc:type.qualificationname","label":"Dc Type Qualificationname","values":["Ph.D."]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://eprints.soton.ac.uk/72370/1/thesis3-corrected.pdf"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["The issue of calculating at strong coupling is a hard problem in physics. The discovery of gauge-gravity duality at the end of the Twentieth Century provides a novel means of calculating in a large-N gauge theory at strong coupling. In this thesis we apply the method of gauge-gravity duality to a variety of questions. Firstly we review the string theory background material and then introduce the gauge-gravity duality. We discuss the procedure for adding fundamental representation matter to gravity duals. We present a method for calculating the quasinormal frequencies associated to mesonlike excitations in non-zero temperature gravity duals and apply it to excitations of bosonic and fermionic type. We study the thermal phase transition in a somewhat QCD-like gravity dual deformed by the presence of a relevant operator and find a plausible transition between a QCD-like confining phase and a high temperature phase which is just the generic black hole geometry. Finally we examine the effect of chemical potential on the behaviour of fundamental representation matter in a gravity dual and look for superconductivity-like behaviour."]},{"key":"dc:format","label":"Dc Format","values":["text"]},{"key":"dc:title","label":"Title","values":["Aspects of strongly-coupled field theory from gauge-gravity duality"]}]}],"canonical_facts":{"dc:contributor.advisor":["Evans, N."],"dc:creator":["Threlfall, Edward James"],"dc:date":["2009-09"],"dc:date.issued":["2009-09"],"dc:description.abstract":["The issue of calculating at strong coupling is a hard problem in physics. The discovery of gauge-gravity duality at the end of the Twentieth Century provides a novel means of calculating in a large-N gauge theory at strong coupling. In this thesis we apply the method of gauge-gravity duality to a variety of questions. Firstly we review the string theory background material and then introduce the gauge-gravity duality. We discuss the procedure for adding fundamental representation matter to gravity duals. We present a method for calculating the quasinormal frequencies associated to mesonlike excitations in non-zero temperature gravity duals and apply it to excitations of bosonic and fermionic type. We study the thermal phase transition in a somewhat QCD-like gravity dual deformed by the presence of a relevant operator and find a plausible transition between a QCD-like confining phase and a high temperature phase which is just the generic black hole geometry. Finally we examine the effect of chemical potential on the behaviour of fundamental representation matter in a gravity dual and look for superconductivity-like behaviour."],"dc:format":["text"],"dc:identifier.uri":["https://eprints.soton.ac.uk/72370/1/thesis3-corrected.pdf"],"dc:publisher.commercial":["University of Southampton"],"dc:publisher.department":["High Energy Physics (pre 2011 reorg)","School of Physics & Astronomy"],"dc:publisher.institution":["University of Southampton"],"dc:relation.isreferencedby":["https://eprints.soton.ac.uk/72370/"],"dc:title":["Aspects of strongly-coupled field theory from gauge-gravity duality"],"dc:type":["Thesis"],"dc:type.qualificationlevel":["doctoral"],"dc:type.qualificationname":["Ph.D."]},"updated_at":"2026-07-24T04:36:10Z"}