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We discuss a realization of the nonrelativistic conformal group (theSchroedinger group) as the symmetry of a spacetime. We write down a toy modelin which this geometry is a solution to field equations. We discuss variousissues related to nonrelativistic holography. In particular, we argue that freefermions and fermions at unitarity correspond to the same bulk theory withdifferent choices for the near-boundary asymptotics corresponding to the sourceand the expectation value of one operator. We describe an extended version ofnonrelativistic general coordinate invariance which is realizedholographically.

Toward an AdS/cold atoms correspondence: a geometric realization of the Schroedinger symmetry