Klebanov-Witten theory with massive dynamical flavors

Details Klebanov-Witten theory with massive dynamical flavors Klebanov-Witten theory with massive dynamical flavors

2008-07-02

arxiv.org/abs/0807.0298v2

JHEP 0809:048,2008

Physics

High Energy Physics

High Energy Physics - Theory

31 pages, 8 figures; v2: few comments and a reference added, minor changes

Scientific paper

10.1088/1126-6708/2008/09/048

We consider the addition of a large number of massive dynamical flavors to the Klebanov-Witten theory, the quiver gauge theory describing the low energy dynamics of Nc D3-branes at the conifold singularity. Massive flavors are introduced by means of Nf D7-branes which are holomorphically embedded and smeared along the transverse directions. After some general comments on the validity of the smearing procedure, we find the full backreacted supergravity solution corresponding to a particular class of massive embeddings. The solution depends on a running effective number of flavors, whose functional form follows from the smeared embedding. The running reflects the integrating in/out of massive degrees of freedom in the dual field theory as the energy scale is changed. We study how the dynamics of the theory depends on the flavor parameters, mainly focusing on the static quark-antiquark potential. As expected, we find that the dynamical flavors tend to screen the static color charges.

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