Three-spin interactions in optical lattices and criticality in cluster Hamiltonians.

Abstract

We demonstrate that in a triangular configuration of an optical lattice of two atomic species a variety of novel spin-1/2 Hamiltonians can be generated. They include effective three-spin interactions resulting from the possibility of atoms tunneling along two different paths. This motivates the study of ground state properties of various three-spin… (More)

2 Figures and Tables