Solitons and entanglement in the double sine-Gordon model

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.

11 pages, 28 figures. This version improves the previous one

References in corpus (3)

• Neutral Bound States in Kink-like Theories
• Quantum correlations in the soliton collisions
• Entanglement of Solitons in the Frenkel-Kontorova Model

Cited by in corpus (1)

• Exact mapping from the $(3+1)$-dimensional Skyrme model to the $(1+1)$-dimensional sine-Gordon theory and some applications