Quantum Institute: Visitor Schedule

The Quantum Lunch is regularly held on Thursdays in the Theoretical Division Conference Room, TA-3, Building 123, Room 121.
For more information, contact Diego Dalvit.

October 4 , 2007
12:30 PM

Raul O. Vallejos,
Centro Brasileiro de Pesquisas Fisicas

WKB Propagation of Gaussian Wavepackets

Abstract

We will analyze the semiclassical evolution of a Gaussian wavepacket in a chaotic closed system using standard time-dependent WKB theory (no complex trajectories). We will show that the Wigner function develops the structure of a classical filament plus quantum oscillations, with phase and amplitude being determined by geometric properties of an evolvingclassical manifold. We also will discuss the extension to open systems in the Lindbladian context.