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arXiv · 1801.05817

Dynamical manifestation of Gibbs paradox after a quantum quench

M. Collura·M. Kormos·G. Takacs
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Abstract

We study the propagation of entanglement after quantum quenches in the non-integrable para-magnetic quantum Ising spin chain. Tuning the parameters of the system, we observe a sudden increase in the entanglement production rate, which we show to be related to the appearance of new quasi-particle excitations in the post-quench spectrum. We argue that the phenomenon is the non-equilibrium version of the well-known Gibbs paradox related to mixing entropy and demonstrate that its characteristics fit the expectations derived from the quantum resolution of the paradox in systems with a non-trivial quasi-particle spectrum.

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M. Collura, M. Kormos, G. Takacs. 2018-01-17. Dynamical manifestation of Gibbs paradox after a quantum quench. https://doi.org/10.1103/physreva.98.053610

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