L. Benet et al., Semiclassical properties of eigenfunctions and occupation number distribution for a model of two interacting particles, PHYS LETT A, 277(2), 2000, pp. 87-93
Quantum-classical correspondence for the shape of eigenfunctions, local spe
ctral density of states and occupation number distribution is studied in a
chaotic model of two coupled quartic oscillators. In particular, it is show
n that both classical quantities and quantum spectra determine global prope
rties of occupation numbers and inverse participation ratio. (C) 2000 Elsev
ier Science B.V. All rights reserved.