The supergravity dual of 3D supersymmetric gauge theories with unquenched flavor

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.