Holographic heavy-light mesons from non-Abelian DBI

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dc.creatorErdmenger, Johanna
dc.creatorGhoroku, Kazuo
dc.creatorKirsch, Ingo
dc.date2007-06-27
dc.date2007-09-19
dc.date.accessioned2026-07-07T10:56:28Z
dc.date.available2026-07-07T10:56:28Z
dc.descriptionIn the context of gauge/gravity duals with flavor, we examine heavy-light mesons which involve a heavy and a light quark. For this purpose we embed two D7 brane probes at different positions into the gravity background. We establish the non-Abelian Dirac-Born-Infeld (DBI) action for these probes, in which the U(2) matrix describing the embedding is diagonal. The fluctuations of the brane probes correspond to the mesons. In particular, the off-diagonal elements of the U(2) fluctuation matrix correspond to the heavy-light mesons, while the diagonal elements correspond to the light-light and heavy-heavy mesons, respectively. The heavy-light mesons scale differently with the 't Hooft coupling than the mesons involving quarks of equal mass. The model describes both scalar and vector mesons. For different dilaton-deformed gravity backgrounds, we also calculate the Wilson loop energy, and compare with the meson masses.
dc.description21 pages, 7 figures
dc.identifierhttps://arxiv.org/abs/0706.3978
dc.identifierhttp://arxiv.org/abs/0706.3978
dc.identifierJHEP0709:111,2007
dc.identifierdoi:10.1088/1126-6708/2007/09/111
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/186424
dc.subjectHigh Energy Physics - Theory
dc.titleHolographic heavy-light mesons from non-Abelian DBI
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