Adding flavor to AdS/CFT | Zendy

Andreas Karch | Zendy; Emanuel Katz | Zendy

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Adding flavor to AdS/CFT

Author(s) -

Andreas Karch,

Emanuel Katz

Publication year - 2002

Publication title -

journal of high energy physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.998

H-Index - 261

eISSN - 1126-6708

pISSN - 1029-8479

DOI - 10.1088/1126-6708/2002/06/043

Subject(s) - physics , string (physics) , quark , brane cosmology , theoretical physics , particle physics , symmetry (geometry) , limit (mathematics) , order (exchange) , coupling (piping) , field (mathematics) , quantum chromodynamics , pure mathematics , geometry , mathematics , mechanical engineering , mathematical analysis , finance , engineering , economics

Coupling fundamental quarks to QCD in the dual string representationcorresponds to adding the open string sector. Flavors therefore should berepresented by space-time filling D-branes in the dual 5d closed stringbackground. This requires several interesting properties of D-branes in AdS.D-branes have to be able to end in thin air in order to account for massivequarks, which only live in the UV region. They must come in distinct sets,representing the chiral global symmetry, with a bifundamental field playing therole of the chiral condensate. We show that these expectations are born out inseveral supersymmetric examples. To analyze most of these properties it is notnecessary to go beyond the probe limit in which one neglects the backreactionof the flavor D-branes.Comment: 14 pages, LaTeX; references adde

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