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Solitons and entanglement in the double sine-Gordon model

The bipartite ground state entanglement in a finite linear harmonic chain of particles is numerically investigated. The particles are subjected to an external on-site periodic potential belonging to a family parametrized by the unit interval encompassing the sine-Gordon potential at both ends of the interval. Strong correspondences between the soliton entanglement entropy and the kink energy distribution profile as functions of the sub-chain length are found.

preprint2014arXivOpen access
A. Alonso IzquierdoJ. Mateos GuilarteN. G. de Almeida
quant-ph
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Open access3 authors1 topic
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A. Alonso IzquierdoJ. Mateos GuilarteN. G. de Almeida

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