AMO Seminar: Meera Parish, Monash University, “Dynamics of driven impurities in a quantum gas”

Event time: 
Monday, August 14, 2023 - 2:00pm to 3:00pm
Sloane Physics Laboratory SPL, Room 51 See map
217 Prospect Street
New Haven, CT 06511
Meera Parish, Monash University
Event description: 

The scenario of a mobile impurity immersed in a Fermi gas appears in a wide variety of systems ranging from cold atomic gases to doped semiconductors to neutron stars. Here, the impurity attractively interacts with the surrounding fermions and becomes “dressed” by excitations of the Fermi gas to form a quasiparticle, a particle-like object with modified properties from that of the bare impurity. In this talk, I will discuss how cold atoms can provide fundamental insights into the nature of these quasiparticles, particularly how they can break down in a manner not previously explored in Fermi systems. Furthermore, I will show how the dynamics of impurities driven by external fields can reveal quantum many-body phenomena such as the orthogonality catastrophe.
Host: Nir Navon (