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arXiv · 1009.4833

Ab initio computation of circular quantum dots

M. Pedersen Lohne·G. Hagen·M. Hjorth-Jensen·S. Kvaal·F. Pederiva
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Abstract

We perform coupled-cluster and diffusion Monte Carlo calculations of the energies of circular quantum dots up to 20 electrons. The coupled-cluster calculations include triples corrections and a renormalized Coulomb interaction defined for a given number of low-lying oscillator shells. Using such a renormalized Coulomb interaction brings the coupled-cluster calculations with triples correlations in excellent agreement with the diffusion Monte Carlo calculations. This opens up perspectives for doing ab initio calculations for much larger systems of electrons.

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M. Pedersen Lohne, G. Hagen, M. Hjorth-Jensen, S. Kvaal, F. Pederiva. 2010-09-24. Ab initio computation of circular quantum dots. https://doi.org/10.1103/physrevb.84.115302

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