## Entanglement Entropy for a Coupled Harmonic Oscillator    [PDF]

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.
View original: http://arxiv.org/abs/1302.1959