Efficient and accurate treatment of electron correlations with correlation matrix renormalization theory
- Iowa State Univ., Ames, IA (United States)
- Jilin Univ., Changchun (China); Qingdao Univ., Qingdao, Shadong (China)
We present an efficient method for calculating the electronic structure and total energy of strongly correlated electron systems. The method extends the traditional Gutzwiller approximation for one-particle operators to the evaluation of the expectation values of two particle operators in the many-electron Hamiltonian. The method is free of adjustable Coulomb parameters, and has no double counting issues in the calculation of total energy, and has the correct atomic limit. We demonstrate that the method describes well the bonding and dissociation behaviors of the hydrogen and nitrogen clusters, as well as the ammonia composed of hydrogen and nitrogen atoms. We also show that the method can satisfactorily tackle great challenging problems faced by the density functional theory recently discussed in the literature. The computational workload of our method is similar to the Hartree-Fock approach while the results are comparable to high-level quantum chemistry calculations.
- Research Organization:
- Ames Laboratory (AMES), Ames, IA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- DE-AC02-07CH11358
- OSTI ID:
- 1213570
- Report Number(s):
- IS-J-8711; srep13478; TRN: US1600367
- Journal Information:
- Scientific Reports, Vol. 5; ISSN 2045-2322
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
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journal | March 2019 |
Correlation matrix renormalization theory for correlated-electron materials with application to the crystalline phases of atomic hydrogen
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journal | February 2018 |
First-principles calculation of correlated electron materials based on Gutzwiller wave function beyond Gutzwiller approximation
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journal | June 2019 |
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