Description
In this talk, I'll discuss entanglement entropy in
two-dimensional conformal field theories with a
gravitational anomaly. This anomaly is holographically
represented by a gravitational Chern-Simons term in the bulk
action. The anomaly broadens the Ryu-Takayanagi minimal
worldline into a ribbon, and the anomalous contribution to
the CFT entanglement entropy is given by the twist in this
ribbon. The entanglement functional may also be interpreted
as the worldline action for a spinning particle -- that is,
an anyon -- in three-dimensional curved spacetime. Several
simple examples will be discussed.
