Many-body wave function for a quantum dot in a weak magnetic field

A. Harju, V.A. Sverdlov, R.M. Nieminen, V. Halonen

Research output: Contribution to journalArticleScientificpeer-review

49 Citations (Scopus)
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The ground states of parabolically confined electrons in a quantum dot are studied by both direct numerical diagonalization and quantum Monte Carlo (QMC) methods. We present a simple but accurate variational many-body wave function for the dot in the limit of a weak magnetic field. The wave function has the center-of-mass motion restricted to the lowest-energy state and the electron-electron interaction is taken into account by a Jastrow two-body correlation factor. The optimized wave function has an accuracy very close to the state-of-the-art numerical diagonalization calculations. The results and the computational efficiency indicate that the presented wave function combined with the QMC method suits ideally for studies of large quantum dots.
Original languageEnglish
Pages (from-to)5622-5626
JournalPhysical Review B
Issue number8
Publication statusPublished - 1999
MoE publication typeA1 Journal article-refereed

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