Entanglement in a fermion chain under continuous monitoring

• DOI: 10.21468/scipostphys.7.2.024
• Publication Date: 2019-08-23T02:26:27Z
• Authors: Xiangyu Cao; Antoine Tilloy; Andrea De Luca
• Keywords: Multipartite entanglement

We study the entanglement entropy of quantum trajectories a free fermion chain under continuous monitoring local occupation numbers. propose simple theory for evolution from disentangled and highly excited initial states. It is based on generalized hydrodynamics quasi-particle pair approach to in integrable systems. test several quantitative predictions against extensive numerics find good agreement. In particular, volume law destroyed by presence arbitrarily weak measurement.