Nondispersive two-electron Trojan wave packets

Details Nondispersive two-electron Trojan wave packets Nondispersive two-electron Trojan wave packets

2005-02-14

arxiv.org/abs/quant-ph/0502071v2

Physics

Quantum Physics

4 pages 4 figures

Scientific paper

We demonstrate the existence of stable non-dispersing two-electron Trojan-like wave packets in the helium atom in combined magnetic and circularly polarized microwave fields. These packets follow circular orbits and we show that they can also exist in quantum dots. Classically the two electrons follow trajectories which resemble orbits discovered by Langmuir and which were used in attempts at a Bohr-like quantization of the helium atom. Eigenvalues of a generalized Hessian matrix are computed to investigate the classical stability of these states. Diffusion Monte Carlo simulations demonstrate the quantum stability of these two-electron wave packets in the helium atom and quantum dot helium with an impurity center.

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