title: Classical dynamics of quantum entanglement.
abstract: We analyze numerically the dynamical generation of quantum entanglement in a system of two interacting particles, started in a coherent separable state, for decreasing values of ℏ. As ℏ→0 the entanglement entropy, computed at any finite time, converges to a finite nonzero value. The limit law that rules the time dependence of entropy is well reproduced by purely classical computations. Its general features can be explained by simple classical arguments, which expose the different ways entanglement is generated in systems that are classically chaotic or regular.
authors.affiliation: Consorzio Nazionale Italiano di Struttura della Materia, Consiglio Nazionale delle Ricerche, Istituto Nazionale per la Fisica della Materia, and Center for Nonlinear and Complex Systems, Università degli Studi dell'Insubria, Via Valleggio 11, I-22100 Como, Italy.
authors.forename: Giulio
authors.initials: G
authors.lastname: Casati
authors.forename: Italo
authors.initials: I
authors.lastname: Guarneri
authors.forename: Jose
authors.initials: J
authors.lastname: Reslen