Tea in the Atrium Room: 307

Colloquium Room: 307 Title: A Strange Exchange: Paraparticles and Where to Find Them Abstract: Particle exchange statistics is a fundamental characteristic of quantum matter, conventionally thought to be constrained to either fermionic or bosonic. Each type gives distinct phenomena: fermions and the consequent exclusion principle lead to the structure of the periodic table and properties of metals, while bosons and their bunching give lasers and superfluidity. I will discuss recent research in our group that has shown other exchange statistics are possible (beyond already-known anyons, which are restricted to two dimensions) and naturally emerge as excitations in spin models. These “paraparticles” admit non-interacting theories, unlike anyons, and I will describe our vision of using this to form the foundation of new analytic and numerical methods to provide a window into correlated matter.