Bose Polaron as an Instance of Quantum Brownian Motion

2017 edition

Aniello Lampo

Quantum Brownian motion represents a paradigmatic model of open quantum system. It describes the dynamics of a particle coupled to a huge environment. In our work we employ such a model to investigate the physical behaviour of an impurity embedded in an ultra colds gas (Polaron Problem). This approach allows to calculate measurable observables and predict new effects, such as superdiffusion and squeezing.