Compression of to 460 GPa and Isotopic Effects in the Path to Metal Hydrogen

P Loubeyre, F Occelli, P Dumas - Physical Review Letters, 2022 - APS
How are nuclear quantum fluctuations affecting the properties of dense hydrogen
approaching metallization? We report here Raman spectroscopy and synchrotron infrared …

[HTML][HTML] Machine learning for a finite size correction in periodic coupled cluster theory calculations

L Weiler, TN Mihm, JJ Shepherd - The Journal of chemical physics, 2022 - pubs.aip.org
We introduce a straightforward Gaussian process regression (GPR) model for the transition
structure factor of metal periodic coupled cluster singles and doubles (CCSD) calculations …

Coupled cluster finite temperature simulations of periodic materials via machine learning

B Herzog, A Gallo, F Hummel, M Badawi… - npj Computational …, 2024 - nature.com
Density functional theory is the workhorse of materials simulations. Unfortunately, the quality
of results often varies depending on the specific choice of the exchange-correlation …

Binding energies of molecular solids from fragment and periodic approaches

J Hofierka, J Klimeš - Electronic Structure, 2021 - iopscience.iop.org
We calculate binding energies of four molecular solids using the Hartree–Fock (HF) and
second-order Møller–Plesset perturbation theory (MP2). We obtain the energies within many …

Behavior of Hydrogen and Hydrides Under Pressure

SM Sharma, R Chidambaram - High Pressure Physics: A Treatise, 2024 - Springer
Hydrogen, the simplest and most abundant element of the universe, has proven to be an
enigma for high pressure physics. Its predicted metallization and superconductivity under …

Simple molecules at high pressures: transitions to extended and atomic states

AF Goncharov - High-pressure Molecular Spectroscopy, 2022 - degruyter.com
Atoms in molecules are bound by strong covalent bonds. In contrast, molecules are held
together by weak (eg, van der Waals) bonds in the condensed state, which determine their …