Novel quantum chaotic dynamics in cold atoms

We discuss recent experimental and theoretical investigations of quantum dynamics in periodically kicked chaotic systems. These investigations are centred on a modified version of the classic delta-kicked rotor, as realized using laser-cooled caesium atoms. Dramatic phenomena, principally quantum accelerator modes, have been observed and these have inspired novel theoretical approaches to quantum chaos. The latter work has, in turn. prompted further experiments and the combined experimental and theoretical effort continues to lead to exciting advances in this field.