Speaker
Prof.
Karyn Le Hur
(Ecole Polytechnique, France)
Description
Abstract: In this talk, we explore non-trivial phases of
matter with topological properties as well as strong
interactions. First, we introduce simple models exemplifying
that (spin) Meissner currents can persist in insulating
phases of matter such as Mott insulators. The topological
aspect in this system emerges through the flux
quantization phenomenon as in a superconductor, despite
the presence of a Mott gap. Then, we discuss a possibility to
engineer a two-dimensional topological Mott insulator, i.e., a
topological band insulator driven by interaction effects
(only). Finally, we address a bosonic analogue of the
Haldane model on the honeycomb lattice and study the
interplay bewteen Josephson physics, artificial gauge fields
and Mott physics. The models presented here can be
realized in cold atom experiments, in circuit Quantum
Electrodynamics and Josephson junction systems.