Two-electron entanglement in a two-dimensional isotropic harmonic trap: Radial correlation effects in the low density limit

Details Two-electron entanglement in a two-dimensional isotropic harmonic trap: Radial correlation effects in the low density limit Two-electron entanglement in a two-dimensional isotropic harmonic trap: Radial correlation effects in the low density limit

2010-12-15

arxiv.org/abs/1012.3366v3

Physics Letters A 375 (2011) 458-462

Physics

Quantum Physics

10 pages,3 figures

Scientific paper

10.1016/j.physleta.2010.12.035

We study a two-dimensional system of two Coulombically interacting electrons in an external harmonic confining potential. More precisely, we present calculations for the singlet ground-state of the system. We explain the nature of the degeneracy in the spectrum of the reduced density matrix and provide detailed results for the dependencies of the entanglement on the interaction strength. Among other features, it is indicated that in the limit of an infinitely strong interaction, the angular and radial correlations are asymptotically independent of each other. Appearing in this limit, the pure radial correlation effects are quantitatively investigated for the first time.

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