Higher order terms for the quantum evolution of a Wick observable within   the Hepp method
  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 \epsilon > 0 which makes sense within the infinite-dimensional setting and fits with finite-dimensional formulae. 
S\'ebastien Breteaux (IRMAR)
math-ph math.MP