### Speaker

Roman Schubert
(University of Bristol)

### Description

Decoherence is the suppression of interference effects in quantum mechanics due to the coupling of a system to an environment. The evolution in an open quantum system is typically described by the Lindblad equation and I will describe how semiclassical analysis of the Lindblad equation leads to a classical diffusion equation in the Hoermander sum of squares form and how hypoellipticity of that equation is related to decoherence. I will not assume any background knowledge on the Lindblad equation.