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Title: Ab Initio Computation of the Energies of Circular Quantum Dots

Journal Article · · Physical Review. B, Condensed Matter and Materials Physics
 [1];  [2];  [1];  [1];  [3]
  1. University of Oslo, Norway
  2. ORNL
  3. University of Trento, Italy
+ Show Author Affiliations

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.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF)
Sponsoring Organization:
USDOE Office of Science (SC)
DOE Contract Number:
DE-AC05-00OR22725
OSTI ID:
1024662
Journal Information:
Physical Review. B, Condensed Matter and Materials Physics, Vol. 84, Issue 11; ISSN 1098-0121
Country of Publication:
United States
Language:
English

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Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
DIFFUSION
ELECTRONS
OSCILLATORS
QUANTUM DOTS