Delocalization error poisons the density-functional many-body expansion

DR Broderick, JM Herbert - Chemical Science, 2024 - pubs.rsc.org
The many-body expansion is a fragment-based approach to large-scale quantum chemistry
that partitions a single monolithic calculation into manageable subsystems. This technique is …

Graph-|Q⟩⟨C|, a Graph-Based Quantum/Classical Algorithm for Efficient Electronic Structure on Hybrid Quantum/Classical Hardware Systems: Improved Quantum …

JH Zhang, SS Iyengar - Journal of Chemical Theory and …, 2022 - ACS Publications
We present a procedure to reduce the depth of quantum circuits and improve the accuracy of
results in computing post-Hartree–Fock electronic structure energies in large molecular …

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 …

Graph theoretic molecular fragmentation for multidimensional potential energy surfaces yield an adaptive and general transfer machine learning protocol

X Zhu, SS Iyengar - Journal of Chemical Theory and Computation, 2022 - ACS Publications
Over a series of publications we have introduced a graph-theoretic description for molecular
fragmentation. Here, a system is divided into a set of nodes, or vertices, that are then …

Graph-theoretic molecular fragmentation for potential surfaces leads naturally to a tensor network form and allows accurate and efficient quantum nuclear dynamics

A Kumar, N DeGregorio, T Ricard… - Journal of Chemical …, 2022 - ACS Publications
Molecular fragmentation methods have revolutionized quantum chemistry. Here, we use a
graph-theoretically generated molecular fragmentation method, to obtain accurate and …

Graph-theory-based molecular fragmentation for efficient and accurate potential surface calculations in multiple dimensions

A Kumar, N DeGregorio, SS Iyengar - Journal of Chemical Theory …, 2021 - ACS Publications
We present a multitopology molecular fragmentation approach, based on graph theory, to
calculate multidimensional potential energy surfaces in agreement with post-Hartree–Fock …

Resource Optimization for Quantum Dynamics with Tensor Networks: Quantum and Classical Algorithms

A Dwivedi, MA Lopez-Ruiz… - The Journal of Physical …, 2024 - ACS Publications
The exponential scaling of the quantum degrees of freedom with the size of the system is
one of the biggest challenges in computational chemistry and particularly in quantum …

Weighted-graph-theoretic methods for many-body corrections within ONIOM: Smooth AIMD and the role of high-order many-body terms

JH Zhang, TC Ricard, C Haycraft… - Journal of Chemical …, 2021 - ACS Publications
We present a weighted-graph-theoretic approach to adaptively compute contributions from
many-body approximations for smooth and accurate post-Hartree–Fock (pHF) ab initio …

Capturing Weak Interactions in Surface Adsorbate Systems at Coupled Cluster Accuracy: A Graph-Theoretic Molecular Fragmentation Approach Improved through …

TC Ricard, X Zhu, SS Iyengar - Journal of Chemical Theory and …, 2023 - ACS Publications
The accurate and efficient study of the interactions of organic matter with the surface of water
is critical to a wide range of applications. For example, environmental studies have found …

Quantum embedding electronic structure methods

A Wasserman, M Pavanello - International Journal of Quantum Chemistry, 2020 - elibrary.ru
Quantum embedding electronic structure methods КОРЗИНА ПОИСК НАВИГАТОР
ЖУРНАЛЫ КНИГИ ПАТЕНТЫ ПОИСК АВТОРЫ ОРГАНИЗАЦИИ КЛЮЧЕВЫЕ СЛОВА …