## "Chiral Phases in Frustrated 2D Antiferromagnets and Fractional Chern Insulators"

**Speaker:**Eduardo Fradkin, University of Illinois at Urbana-Champaign

**When:**April 2, 2018 (Mon), 11:00AM to 12:00PM (add to my calendar)

**Location:**SCI 328

**Hosted by:**Christopher Laumann

*This event is part of the Condensed Matter Theory Seminar Series. *

The problem of topological phases of matter is one of the most fascinating open questions in theoretical physics. In this seminar I will discuss recent advances in the theory of topological phases in 2D systems. A key tool for these studies is a lattice version of Chern-Simons gauge theory. In particular its application to the problem of chiral phases in magnetization plateaus of spin 1/2 quantum antiferromagnets on the Kagome lattice and of fractional Chern insulators. The role of topology in the effective field theory and fractionalization of translation symmetries will be discussed.