Review of multicomponent molecular orbital method for direct treatment of nuclear quantum effect

T Ishimoto, M Tachikawa… - International Journal of …, 2009 - Wiley Online Library
We present the methodology and applications of multicomponent molecular orbital
(MC_MO) method, which can take into account of the quantum effect of light particles, such …

Five lowest states of the Be atom calculated with a finite-nuclear-mass approach and with relativistic and QED corrections

M Stanke, J Komasa, S Bubin, L Adamowicz - Physical Review A—Atomic …, 2009 - APS
We have performed very accurate quantum mechanical calculations of the five lowest S
states of the beryllium atom. In the nonrelativistic part of the calculations we used the …

Very accurate potential energy curve of the He 2+ ion

WC Tung, M Pavanello, L Adamowicz - The Journal of Chemical …, 2012 - pubs.aip.org
A very accurate ground-state potential energy curve (PEC) of the| ${\rm He} _2^+ $| He 2+
molecule is calculated with 1200 explicitly correlated Gaussian functions with shifted centers …

Lowest Excitation Energy of

M Stanke, D Kędziera, S Bubin, L Adamowicz - Physical review letters, 2007 - APS
Variational calculations employing explicitly correlated Gaussian functions and explicitly
including the nuclear motion [ie, without assuming the Born-Oppenheimer (BO) …

[PDF][PDF] Atomic properties of the two-electron system using variational Monte Carlo technique

S Doma, F El-Gammal - Acta Physica Polonica A, 2012 - bibliotekanauki.pl
Using variational Monte Carlo method we calculated the lowest order relativistic corrections
for the ground state energies of the helium-like atoms, up to Z= 10, and also for some excited …

Accuracy limits on the description of the lowest excitation in the Li atom using explicitly correlated Gaussian basis functions

M Stanke, J Komasa, D Kȩdziera, S Bubin… - Physical Review A …, 2008 - APS
We have performed very accurate quantum-mechanical calculations for the two lowest S
states of the lithium atom in order to determine the transition energy. In the nonrelativistic …

Accurate potential energy curves for HeH+ isotopologues

WC Tung, M Pavanello, L Adamowicz - The Journal of Chemical …, 2012 - pubs.aip.org
New accurate ground-state potential energy curves (PEC) for the 4 HeH+, 4 HeD+, 3 HeH+,
and 3 HeD+ isotopologues are calculated with 600 explicitly correlated Gaussian (ECG) …

Relativistic corrections to the ground-state energy of the positronium molecule

S Bubin, M Stanke, D Kȩdziera, L Adamowicz - Physical Review A—Atomic …, 2007 - APS
The leading-order relativistic corrections to the ground-state energy of the positronium
molecule (Ps 2) have been computed within the framework of perturbation theory. As the …

Relativistic effects in confined helium-like atoms

Y Yakar, B Çakır, C Demir, A Özmen - Journal of Luminescence, 2021 - Elsevier
The first-order relativistic effects such as relativistic correction to the kinetic energy, spin-orbit
interaction and one-and two-body Darwin terms for the ground and excited states of …

Electron affinity of Li7 calculated with the inclusion of nuclear motion and relativistic corrections

M Stanke, D Kȩdziera, S Bubin… - The Journal of chemical …, 2007 - pubs.aip.org
Explicitly correlated Gaussian functions have been used to perform very accurate variational
calculations for the ground states of Li 7 and Li− 7⁠. The nuclear motion has been explicitly …