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Entanglement and its evolution after a quench in the presence of an energy current

We study the Ising spin chain with a Dzyaloshinskii-Moriya interaction focusing on the static and dynamic properties of the entanglement entropy, following a quantum quench. We show that the effects of the additional anisotropic interaction on the phase diagram and on the dynamics of the system are captured by the properties of the entanglement entropy. In particular, the model provides a way to study the quench dynamics in a system with an energy current. We consider quenches starting from an initial excited state of the Ising spin chain, and we analyze the effects of different initial conditions.

preprint2011arXivOpen access
Anirban DasSilvano GarneroneStephan Haas
cond-mat.stat-mechquant-ph
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Anirban DasSilvano GarneroneStephan Haas

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