Wednesday Colloquium: Professor Dmitri Kharzeev (Stony Brook)
Title: Chirality: from particles and nuclei to quantum materials
Abstract: Abstract: Chirality is a ubiquitous concept in modern science, from particle physics to biology. In quantum physics, chirality is intimately linked to the topology of gauge fields due to the quantum chiral anomaly. While the chiral anomaly is usually associated with the short-distance behavior, recently it has been realized that it affects also the macroscopic behavior of fluids with chiral fermions. In particular, the local imbalance between left- and right-handed fermions in the presence of magnetic field induces the non-dissipative transport of electric charge ("the Chiral Magnetic Effect").
In heavy ion collisions, this effect can be detected through the separation of positive and negative hadrons with respect to the reaction plane. There is a recent evidence for charge separation from the experiments at Relativistic Heavy Ion Collider and the Large Hadron Collider. I will discuss also a variety of novel and surprising effects induced by quantum anomalies in condensed matter systems (e.g. quantum wires, graphene, and Weyl semimetals).