From black strings to black holes: nuttier and squashed AdS5 solutions

We construct new solutions of the Einstein equations with negative cosmological constant in five spacetime dimensions. They smoothly emerge as deformations of the known AdS(5) black strings. The first type of configurations can be viewed as the d = 4 Taub-NUT-AdS solutions uplifted to five dimensions, in the presence of a negative cosmological constant. We argue that these solutions would provide the gravity dual for a N = 4 super-Yang-Mills theory formulated in a d = 4 homogeneous Godel-type spacetime background. A different deformation of the AdS(5) black strings leads to squashed AdS black holes and their topological generalizations. In this case, the conformal infinity is the product of time and a circle-fibration over a base space that is a two-dimensional Einstein space.