Solitons and entanglement in the double sine-Gordon model
arXiv:1405.7830 · doi:10.1088/0953-4075/48/1/015501
Abstract
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.
arXiv comment11 pages, 28 figures. This version improves the previous one
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