# Entanglement Content of Quantum Particle Excitations II. Disconnected Regions and Logarithmic Negativity.

@inproceedings{CastroAlvaredo2019EntanglementCO, title={Entanglement Content of Quantum Particle Excitations II. Disconnected Regions and Logarithmic Negativity.}, author={Olalla A. Castro-Alvaredo and Cecilia De Fazio and Benjamin Doyon and Istv'an M. Sz'ecs'enyi}, year={2019} }

In this paper we study the increment of the entanglement entropy and of the (replica) logarithmic negativity in a zero-density excited state of a free massive bosonic theory, compared to the ground state. This extends the work of two previous publications by the same authors. We consider the case of two disconnected regions and find that the change in the entanglement entropy depends only on the combined size of the regions and is independent of their connectivity. We subsequently generalize… CONTINUE READING

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