Dynamical entanglement entropy with angular momentum and U(1) charge

Understand

We consider time-dependent entanglement entropy (EE) for a 1+1 dimensional CFT in the presence of angular momentum and U(1) charge.

• The EE saturates, irrespective of the initial state, to the grand canonical entropy after a time large compared with the length of the entangling interval.
• We reproduce the CFT results from an AdS dual consisting of a spinning BTZ black hole and a flat U(1) connection.
• The apparent discrepancy that the holographic EE does not a priori depend on the U(1) charge while the CFT EE does, is resolved by the charge-dependent shift between the bulk and boundary stress tensors.