Mesonic quasinormal modes of the Sakai-Sugimoto model at high temperature
Mesonic quasinormal modes of the Sakai-Sugimoto model at high temperature
We examine the mesonic thermal spectrum of the Sakai-Sugimoto model of holographic QCD by finding the quasinormal frequencies of the supergravity dual. If flavor is added using D8-[overline D8] branes there exist embeddings where the D-brane world volume contains a black hole. For these embeddings (the high-temperature phase of the Sakai-Sugimoto model) we determine the quasinormal spectra of scalar and vector mesons arising from the world volume Dirac-Born-Infeld (DBI) action of the D-brane. We stress the importance of a coordinate change that makes the infalling quasinormal modes regular at the horizon allowing a simple numerical shooting technique. Finally we examine the effect of finite spatial momentum on quasinormal spectra.
126008-[6pp]
Evans, Nick
33dfbb52-64dd-4c1f-9cd1-074faf2be4b3
Threlfall, Ed
0a0ac961-d313-4a6e-9096-922f9a995f45
12 June 2008
Evans, Nick
33dfbb52-64dd-4c1f-9cd1-074faf2be4b3
Threlfall, Ed
0a0ac961-d313-4a6e-9096-922f9a995f45
Evans, Nick and Threlfall, Ed
(2008)
Mesonic quasinormal modes of the Sakai-Sugimoto model at high temperature.
Physical Review D, 77 (12), .
(doi:10.1103/PhysRevD.77.126008).
Abstract
We examine the mesonic thermal spectrum of the Sakai-Sugimoto model of holographic QCD by finding the quasinormal frequencies of the supergravity dual. If flavor is added using D8-[overline D8] branes there exist embeddings where the D-brane world volume contains a black hole. For these embeddings (the high-temperature phase of the Sakai-Sugimoto model) we determine the quasinormal spectra of scalar and vector mesons arising from the world volume Dirac-Born-Infeld (DBI) action of the D-brane. We stress the importance of a coordinate change that makes the infalling quasinormal modes regular at the horizon allowing a simple numerical shooting technique. Finally we examine the effect of finite spatial momentum on quasinormal spectra.
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Published date: 12 June 2008
Organisations:
Physics & Astronomy
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Local EPrints ID: 141512
URI: http://eprints.soton.ac.uk/id/eprint/141512
ISSN: 1550-7998
PURE UUID: 1c6c3400-602d-4bc5-862d-d7eb247ad13d
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Date deposited: 29 Mar 2010 13:51
Last modified: 14 Mar 2024 00:37
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Author:
Ed Threlfall
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