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

Autor:	V. Halonen, Ari Harju, Viktor Sverdlov, Risto M. Nieminen
Přispěvatelé:	Perustieteiden korkeakoulu, School of Science, Teknillisen fysiikan laitos, Department of Applied Physics, Aalto-yliopisto, Aalto University
Rok vydání:	1999
Předmět:	Physics Quantum Monte Carlo quantum dots Electron Function (mathematics) magnetic fields Magnetic quantum number Magnetic field Quantum dot Quantum mechanics Quantum electrodynamics Wave function Wave function collapse
Zdroj:	Physical Review B. 59:5622-5626
ISSN:	1095-3795 0163-1829
DOI:	10.1103/physrevb.59.5622
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::15e2764602de9a260e46eb3fabbd014c https://doi.org/10.1103/physrevb.59.5622 Zobrazit plný text záznamu