Asymptotics for the Phase Space Schr\"{o}dinger Equation

Abstract

We consider semi-classical time evolution for the phase space Schr\"{o}dinger equation. We construct a semi-classical phase space propagator in terms of semi-classical wave packets by the Anisotropic Gaussian Approximation, related to the Nearby Orbit Approximation. We deduce the canonical system in double phase space, related to the Berezin-Shubin-Marinov canonical system and construct a semi-classical asymptotic solution of the Cauchy problem for the phase space Schr\"{o}dinger equation for initial WKB states. We illustrate the method for sub-quadratic potentials in $\mathbb{R}$.