Semiclassical properties of eigenfunctions and occupation number distribution for a model of two interacting particles

Abstract

Quantum-classical correspondence for the shape of eigenfunctions, local spectral density of states and occupation number distribution is studied in a chaotic model of two coupled quartic oscillators. In particular, it is shown that both classical quantities and quantum spectra determine global properties of occupation numbers and inverse participation ratio.Comment: 11 pages, elsevier style, 4 ps figure