Wigner Measure Propagation and Conical Singularity for General Initial   Data
  We study the evolution of Wigner measures of a family of solutions of a Schr\"odinger equation with a scalar potential displaying a conical singularity. Under a genericity assumption, classical trajectories exist and are unique, thus the question of the propagation of Wigner measures along these trajectories becomes relevant. We prove the propagation for general initial data. 
Clotilde Fermanian-Kammerer, Patrick G\'erard, Caroline Lasser
math.AP