Equation of state of atomic solid hydrogen by stochastic many-body wave function methods
Azadi S, Booth GH, Kühne TD (2020)
Publication Type: Journal article
Publication year: 2020
Journal
Book Volume: 153
Article Number: 204107
Journal Issue: 20
DOI: 10.1063/5.0026499
Abstract
We report a numerical study of the equation of state of crystalline body-centered-cubic (BCC) hydrogen, tackled with a variety of complementary many-body wave function methods. These include continuum stochastic techniques of fixed-node diffusion and variational quantum Monte Carlo and the Hilbert space stochastic method of full configuration-interaction quantum Monte Carlo. In addition, periodic coupled-cluster methods were also employed. Each of these methods is underpinned with different strengths and approximations, but their combination in order to perform reliable extrapolation to complete basis set and supercell size limits gives confidence in the final results. The methods were found to be in good agreement for equilibrium cell volumes for the system in the BCC phase.
Involved external institutions
United Kingdom (GB)
Germany (DE)How to cite
APA:
Azadi, S., Booth, G.H., & Kühne, T.D. (2020). Equation of state of atomic solid hydrogen by stochastic many-body wave function methods. Journal of Chemical Physics, 153(20). https://doi.org/10.1063/5.0026499
MLA:
Azadi, Sam, George H. Booth, and Thomas D. Kühne. "Equation of state of atomic solid hydrogen by stochastic many-body wave function methods." Journal of Chemical Physics 153.20 (2020).
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