Entanglement Entropy of Systems with Spontaneously Broken Continuous Symmetry

Understand

We study entanglement properties of systems with spontaneously broken continuous symmetry.

• We find that in addition to the expected area law behavior, the entanglement entropy contains a subleading contribution which diverges logarithmically with the subsystem size in agreement with the Monte Carlo simulations of A.
• Kallin et.
• al.