Periodic chaotic billiards:: Quantum-classical correspondence in energy space -: art. no. 036206

We investigate the properties of eigenstates and local density of states (LDOS) for a periodic two-dimensional rippled billiard, focusing on their quantum-classical correspondence in energy representation. To construct the classical counterparts of LDOS and the structure of eigenstates (SES), the effects of the boundary are first incorporated (via a canonical transformation) into an effective potential, rendering the one-particle motion in the 2D rippled billiard equivalent to that of two interacting particles in ID geometry, We show that classical counterparts of SES and LDOS in the case of strong chaotic motion reveal quite a good correspondence with the quantum quantities. We also show that the main features of the SES and LDOS can be explained in terms of the underlying classical dynamics, in particular, of certain periodic orbits. On the other hand, statistical properties of eigenstates and LDOS turn out to be different from those prescribed by random matrix theory. We discuss the quantum effects responsible for the nonergodic character of the eigenstates and individual LDOS that seem to be generic for this type of billiards with a large number of transverse channels.