QCD physics from the AdS/CFT correspondence
QCD physics from the AdS/CFT correspondence
The AdS/CFT correspondence is studied in the presence of D7-brane probes which add fundamental matter to the field theory. Using the Dirac-Born-Infeld action of D7-branes in supergravity geometries dual to supersymmetric and non-supersymmetric field theories, the phenomenon of chiral symmetry breaking is studied. We investigate five deformations of the AdS5 x S5 geometry where relevant operators have been added to the field theory. Some of the properties of a supergravity background necessary to trigger a quark bilinear condensate in the dual field theory are discovered. A new technique to study the potential felt by a D7-brane in the region of a singularity is developed and used to study QCD phenomena analytically. The low energy effective pion Lagrangian is investigated and predictions made for phenomenological parameters. A preliminary investigation into perfect QCD actins from the AdS/CFT correspondence is also made. The results indicate that the gauge-gravity duality with a low UV cutoff can provide more accurate results than a UV complete theory.
University of Southampton
Shock, Jonathan Phillip
ae5657d5-43f9-4494-b44e-df5134865e5d
2005
Shock, Jonathan Phillip
ae5657d5-43f9-4494-b44e-df5134865e5d
Shock, Jonathan Phillip
(2005)
QCD physics from the AdS/CFT correspondence.
University of Southampton, Doctoral Thesis, 213pp.
Record type:
Thesis
(Doctoral)
Abstract
The AdS/CFT correspondence is studied in the presence of D7-brane probes which add fundamental matter to the field theory. Using the Dirac-Born-Infeld action of D7-branes in supergravity geometries dual to supersymmetric and non-supersymmetric field theories, the phenomenon of chiral symmetry breaking is studied. We investigate five deformations of the AdS5 x S5 geometry where relevant operators have been added to the field theory. Some of the properties of a supergravity background necessary to trigger a quark bilinear condensate in the dual field theory are discovered. A new technique to study the potential felt by a D7-brane in the region of a singularity is developed and used to study QCD phenomena analytically. The low energy effective pion Lagrangian is investigated and predictions made for phenomenological parameters. A preliminary investigation into perfect QCD actins from the AdS/CFT correspondence is also made. The results indicate that the gauge-gravity duality with a low UV cutoff can provide more accurate results than a UV complete theory.
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Published date: 2005
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Local EPrints ID: 465797
URI: http://eprints.soton.ac.uk/id/eprint/465797
PURE UUID: d84c62cb-0fc8-4979-b3bf-6c7723c39732
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Date deposited: 05 Jul 2022 03:08
Last modified: 16 Mar 2024 20:22
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Author:
Jonathan Phillip Shock
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