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arXiv · 0906.4650

Nonlinear Schroedinger-Poisson Theory for Quantum-Dot Helium

Gilbert Reinisch·Vidar Gudmundsson
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Abstract

We use a nonlinear Schroedinger-Poisson equation to describe two interacting electrons with opposite spins confined in a parabolic potential, a quantum dot. We propose an effective form of the Poisson equation taking into account the dimensional mismatch of the two-dimensional electronic system and the three-dimensional electrostatics. The results agree with earlier numerical calculations performed in a large basis of two-body states and provide a simple model for continuous quantum-classical transition with increasing nonlinearity. Specific intriguing properties due to eigenstate non-orthogonality are emphasized.

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Gilbert Reinisch, Vidar Gudmundsson. 2009-06-25. Nonlinear Schroedinger-Poisson Theory for Quantum-Dot Helium. https://doi.org/10.1016/j.physd.2012.02.004

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