Using AdS/CFT, we study the addition of an arbitrary number of backreacting flavors to the Klebanov-Witten theory, making many checks of consistency between our new Type IIB plus branes solution and expectations from field theory. We study generalizations of our method for adding flavors to all N = 1 SCFTs that can be realized on D3-branes at the tip of a Calabi-Yau cone. Also, general guidelines suitable for the addition of massive flavor branes are developed.
In this paper we present new analytic solutions of pure Type IIB supergravity plus D7branes describing the addition of an arbitrary number of flavors to the Klebanov-Tseytlin and Klebanov-Strassler backgrounds. We provide a precise field theory dual and a detailed analysis of the duality cascade which describes its RG flow. Matchings of beta functions and anomalies between the field theory and the string setup are presented. We give an understanding of Seiberg duality as a large gauge transformation on the RR and NSNS potentials. We also analyze the UV behavior of the field theory, that as suggested by the string background can be associated with a duality wall.
We obtain the supergravity dual of N = 1 gauge theory in 2+1 dimensions with a large number of unquenched massless flavors. The geometries found are obtained by solving the equations of motion of supergravity coupled to a suitable continuous distribution of flavor branes. The background obtained preserves two supersymmetries. We find that when N c ≥ 2N f the behavior of the solutions is compatible with having an asymptotically free dual gauge theory with dynamical quarks. On the contrary, when N c < 2N f the theory develops a Landau pole in the UV. We also find a new family of (unflavored) backgrounds generated by D5-branes that wrap a three-cycle of a cone with G 2 holonomy. 1 canoura@fpaxp1.usc.es 2 merlatti@fpaxp1.usc.es 3 alfonso@fpaxp1.usc.es
We systematically study supersymmetric embeddings of D-brane probes of different dimensionality in the AdS 5 × Y p,q background of type IIB string theory. The main technique employed is the kappa symmetry of the probe's worldvolume theory. In the case of D3branes, we recover the known three-cycles dual to the dibaryonic operators of the gauge theory and we also find a new family of supersymmetric embeddings. The BPS fluctuations of dibaryons are analyzed and shown to match the gauge theory results. Supersymmetric configurations of D5-branes, representing domain walls, and of spacetime filling D7-branes (which can be used to add flavor) are also found. We also study the baryon vertex and some other embeddings which break supersymmetry but are nevertheless stable.
US-FT-3/05 CECS-PHY-05/15 MCTP-05-99 NSF-KITP-05-107 hep-th/0512087 December 2005 1 canoura@fpaxp1.usc.es 2 edels@fpaxp1.usc.es 3 lpandoz@umich.edu 4 alfonso@fpaxp1.usc.es 5 diana@neu.physics.
We study supersymmetric embeddings of D-brane probes of different dimensionality in the AdS 5 × L a,b,c background of type IIB string theory. In the case of D3-branes, we recover the known three-cycles dual to the dibaryonic operators of the gauge theory and we also find a new family of supersymmetric embeddings. Supersymmetric configurations of D5-branes, representing fractional branes, and of spacetime filling D7-branes (which can be used to add flavor) are also found. Stable non supersymmetric configurations corresponding to fat strings and domain walls are found as well.
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