Condensed Matter Seminar: Gauge Theories with Cold Atoms and Tensor Networks

Abstract:

In the last years, ideas and concepts from quantum optics and quantum information have been applied for developing new methods for the study of quantum many body systems and quantum field theories. These involve, for example, quantum simulation of many body models with atomic and optical systems, as well as classical calculation and analysis using tensor network methods.

In my talk, I will demonstrate that for lattice many body systems with a local symmetry - lattice gauge theories. First, I will discuss quantum simulation of lattice gauge theories with ultracold atoms in optical lattices, and then turn to the construction of PEPS (projected entangled pair states - a particular type of tensor network construction) with local (gauge) symmetries, allowing to study, for example, the phase diagram of families of states involving fermionic matter and dynamical gauge fields.

Event Organizer: Prof. Eli Eisenberg