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Auxiliary-field quantum Monte Carlo calculations of the structural properties of nickel oxide

Journal Article · · Journal of Chemical Physics
DOI:https://doi.org/10.1063/1.5040900· OSTI ID:1512639
Auxiliary-field quantum Monte Carlo (AFQMC) has repeatedly shown itself as one of the most accurate quantum many-body methods, capable of simulating both real and model systems. In this work, we investigate the application of AFQMC to realistic strongly correlated materials in periodic Gaussian basis sets. Using nickel oxide (NiO) as an example, we investigate the importance of finite size effects and basis set errors on the structural properties of the correlated solid. We propose benchmark calculations for NiO and compare our results to both experimental measurements and existing theoretical methods.
Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE; USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1512639
Alternate ID(s):
OSTI ID: 1478444
Report Number(s):
LLNL-JRNL--752156; 936048
Journal Information:
Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Journal Issue: 16 Vol. 149; ISSN 0021-9606
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (5)

Complementary first and second derivative methods for ansatz optimization in variational Monte Carlo journal January 2019
Non-orthogonal multi-Slater determinant expansions in auxiliary field quantum Monte Carlo journal February 2019
An auxiliary-Field quantum Monte Carlo perspective on the ground state of the dense uniform electron gas: An investigation with Hartree-Fock trial wavefunctions journal August 2019
Hamiltonian symmetries in auxiliary-field quantum Monte Carlo calculations for electronic structure journal July 2019
Non-Orthogonal Multi-Slater Determinant Expansions in Auxiliary Field Quantum Monte Carlo preprint January 2018

Figures / Tables (6)


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