Chisanupong Puttarprom, Monsit Tanasittikisol, Sikarin Yoo-Kong
We investigated the entanglement for a simple model of two-particles system in the harmonic confinement. The Feynman path integral approach was applied to compute the density matrix of the system. The spatial entanglement of ground-state was study using the linear entropy. We found the spatial entanglement increases while decreasing of the confining potential $\omega$ as this implies that the spatial separation between the particles increases.
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http://arxiv.org/abs/1302.1959
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