title: Chiral and gravitational anomalies on Fermi surfaces.
abstract: A Fermi surface threaded by a Berry phase can be described by the Wess-Zumino-Witten term. After gauging, it produces a five-dimensional Chern-Simons term in the action. We show how this Chern-Simons term captures the essence of the Abelian, non-Abelian, and mixed gravitational anomalies in describing both in- and off-equilibrium phenomena. In particular, we derive a novel contribution to the chiral vortical effect that arises when a temperature gradient is present. We also discuss the issue of universality of the anomalous currents.
authors.affiliation: Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794-3800, USA.
authors.forename: Gökçe
authors.initials: G
authors.lastname: Başar
authors.forename: Dmitri E
authors.initials: DE
authors.lastname: Kharzeev
authors.forename: Ismail
authors.initials: I
authors.lastname: Zahed