Ab initio computation of the energies of circular quantum dots

Article

关键词: DIFFUSION MONTE-CARLO;    INTERACTING ELECTRONS;    MAGNETIC-FIELD;    STATES;    SPECTRA;    MODEL;   

DOI  :  10.1103/PhysRevB.84.115302

来源: SCIE

【 摘 要 】

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.

【 授权许可】

Free