Higher order terms for the quantum evolution of a Wick observable within the Hepp method
arXiv:1102.4018
Abstract
The Hepp method is the coherent state approach to the mean field dynamics for bosons or to the semiclassical propagation. A key point is the asymptotic evolution of Wick observables under the evolution given by a time-dependent quadratic Hamiltonian. This article provides a complete expansion with respect to the small parameter ε> 0 which makes sense within the infinite-dimensional setting and fits with finite-dimensional formulae.