title: Planck's over 2 pi corrections in semiclassical formulas for smooth chaotic dynamics.
abstract: The validity of semiclassical expansions in the power of Planck's over 2 pi for the quantum Green's function have been extensively tested for billiards systems, but in the case of chaotic dynamics with smooth potential, even if formulas are existing, a quantitative comparison is still missing. In this paper, extending the theory developed by Gaspard et al. [Adv. Chem. Phys. 90, 105 (1995)], based on the classical Green's functions, we present an efficient method allowing the calculation of Planck's over 2 pi corrections for the propagator, the quantum Green's function, and their traces. In particular, we show that the previously published expressions for Planck's over 2 pi corrections to the traces are incomplete.
authors.affiliation: Laboratoire Kastler Brossel, Université Pierre et Marie Curie, T12, E1 4, Place Jussieu 75252, Paris cedex 05, France. Benoit.Gremaud@spectro.jussieu.fr
authors.forename: Benoît
authors.initials: B
authors.lastname: Grémaud