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

F Pavošević, 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 …

The any particle molecular orbital approach: A short review of the theory and applications

A Reyes, F Moncada, J Charry - International Journal of …, 2019 - Wiley Online Library
The any particle molecular orbital (APMO) approach extends regular electronic structure
methods to study atomic and molecular systems in which electrons and other particles are …

[HTML][HTML] Multicomponent equation-of-motion coupled cluster singles and doubles: Theory and calculation of excitation energies for positronium hydride

F Pavošević, S Hammes-Schiffer - The Journal of Chemical Physics, 2019 - pubs.aip.org
The calculation of excited states in multicomponent systems, in which more than one type of
particle is described quantum mechanically, is important for a wide range of applications in …

[HTML][HTML] Multicomponent coupled cluster singles and doubles and Brueckner doubles methods: Proton densities and energies

F Pavošević, S Hammes-Schiffer - The Journal of Chemical Physics, 2019 - pubs.aip.org
The nuclear-electronic orbital (NEO) framework enables computationally practical coupled
cluster calculations of multicomponent molecular systems, in which all electrons and …

Calculations of positron binding and annihilation in polyatomic molecules

AR Swann, GF Gribakin - The Journal of chemical physics, 2018 - pubs.aip.org
A model-potential approach to calculating positron-molecule binding energies and
annihilation rates is developed. Unlike existing ab initio calculations, which have mostly …

Development of the multicomponent coupled-cluster theory for investigation of multiexcitonic interactions

BH Ellis, S Aggarwal, A Chakraborty - Journal of chemical theory …, 2016 - ACS Publications
Multicomponent systems are defined as chemical systems that require a quantum
mechanical description of two or more different types of particles. Non-Born–Oppenheimer …

[HTML][HTML] Quantum treatment of protons with the reduced explicitly correlated Hartree-Fock approach

A Sirjoosingh, MV Pak, KR Brorsen… - The Journal of …, 2015 - pubs.aip.org
The nuclear-electronic orbital (NEO) approach treats select nuclei quantum mechanically on
the same level as the electrons and includes nonadiabatic effects between the electrons and …

Interfacing the Ab Initio Multiple Spawning Method with Electronic Structure Methods in GAMESS: Photodecay of trans-Azomethane

A Gaenko, A DeFusco, SA Varganov… - The Journal of …, 2014 - ACS Publications
This work presents a nonadiabatic molecular dynamics study of the nonradiative decay of
photoexcited trans-azomethane, using the ab initio multiple spawning (AIMS) program that …

Reduced explicitly correlated Hartree-Fock approach within the nuclear-electronic orbital framework: Theoretical formulation

A Sirjoosingh, MV Pak, C Swalina… - The Journal of chemical …, 2013 - pubs.aip.org
The nuclear-electronic orbital (NEO) method treats electrons and select nuclei quantum
mechanically on the same level to extend beyond the Born-Oppenheimer approximation …

[HTML][HTML] Multicomponent density functional theory embedding formulation

T Culpitt, KR Brorsen, MV Pak… - The Journal of Chemical …, 2016 - pubs.aip.org
Multicomponent density functional theory (DFT) methods have been developed to treat two
types of particles, such as electrons and nuclei, quantum mechanically at the same level. In …