Journal
JOURNAL OF CHEMICAL PHYSICS
Volume 134, Issue 8, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3554625
Keywords
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Funding
- Cambridge Commonwealth Trust and UK Engineering and Physical Sciences Research Council (EPSRC)
- EPSRC [EP/F032773/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/F032773/1] Funding Source: researchfish
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Quantum Monte Carlo calculations of the first-row atoms Li-Ne and their singly positively charged ions are reported. Multideterminant-Jastrow-backflow trial wave functions are used which recover more than 98% of the correlation energy at the variational Monte Carlo level and more than 99% of the correlation energy at the diffusion Monte Carlo level for both the atoms and ions. We obtain the first ionization potentials to chemical accuracy. We also report scalar relativistic corrections to the energies, mass-polarization terms, and one-and two-electron expectation values. (C) 2011 American Institute of Physics. [doi:10.1063/1.3554625]
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