Entanglement in a fermion chain under continuous monitoring

Multipartite entanglement
DOI: 10.21468/scipostphys.7.2.024 Publication Date: 2019-08-23T02:26:27Z
ABSTRACT
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.
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