Multicomponent quantum chemistry: Integrating electronic and nuclear quantum effects via the nuclear–electronic orbital method

F Pavosevic, T Culpitt, S Hammes-Schiffer - Chemical reviews, 2020‏ - ACS Publications
In multicomponent quantum chemistry, more than one type of particle is treated quantum
mechanically with either density functional theory or wave function based methods. In …

Two-electron reduced density matrix as the basic variable in many-electron quantum chemistry and physics

DA Mazziotti - Chemical reviews, 2012‏ - ACS Publications
When Schrödinger1 derived the now-famous equation bearing his name in 1925, new
possibilities emerged for the theoretical and computational prediction of energies and …

Calculation of vibronic couplings for phenoxyl/phenol and benzyl/toluene self-exchange reactions: Implications for proton-coupled electron transfer mechanisms

JH Skone, AV Soudackov… - Journal of the American …, 2006‏ - ACS Publications
The vibronic couplings for the phenoxyl/phenol and the benzyl/toluene self-exchange
reactions are calculated with a semiclassical approach, in which all electrons and the …

Nuclear Quantum Effects Made Accessible: Local Density Fitting in Multicomponent Methods

L Hasecke, RA Mata - Journal of Chemical Theory and …, 2023‏ - ACS Publications
The simulation of nuclear quantum effects (NQEs) is crucial for an accurate description of
systems and processes involving light nuclei, such as hydrogen atoms. Within the last years …

Hartree–Fock solutions as a quasidiabatic basis for nonorthogonal configuration interaction

AJW Thom, M Head-Gordon - The Journal of chemical physics, 2009‏ - pubs.aip.org
Using the method of self-consistent field metadynamics, we locate some of the low-energy
solutions to the Hartree–Fock (HF) equations on LiF and O 3⁠. The located solutions …

Nuclear–electronic orbital time-dependent configuration interaction method

SM Garner, S Upadhyay, X Li… - The Journal of …, 2024‏ - ACS Publications
Combining real-time electronic structure with the nuclear–electronic orbital (NEO) method
has enabled the simulation of complex nonadiabatic chemical processes. However …

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 …

Nuclear orbital plus molecular orbital theory: Simultaneous determination of nuclear and electronic wave functions without Born–Oppenheimer approximation

H Nakai - International Journal of Quantum Chemistry, 2007‏ - Wiley Online Library
We review a recent development in a rigorous non‐Born–Oppenheimer method, ie, nuclear
orbital plus molecular orbital (NOMO) method, which determines the nuclear and electronic …

Graph-|Q⟩⟨C|: A Quantum Algorithm with Reduced Quantum Circuit Depth for Electronic Structure

SS Iyengar, JH Zhang, D Saha… - The Journal of Physical …, 2023‏ - ACS Publications
The accurate determination of chemical properties is known to have a critical impact on
multiple fundamental chemical problems but is deeply hindered by the steep algebraic …

Generalized nuclear-electronic orbital multistate density functional theory for multiple proton transfer processes

JA Dickinson, Q Yu… - The Journal of Physical …, 2023‏ - ACS Publications
Proton transfer and hydrogen tunneling play pivotal roles in many chemical and biological
processes. The nuclear-electronic orbital multistate density functional theory (NEO-MSDFT) …