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20062026
most citedRecent developments in the PySCF program package

1.2k citations

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30 papers · 1 filter

physics.chem-ph2026

Impurity-Preserved Density Matrix Embedding Theory for Local Electronic Excitations

Teng Zhang, Ze-Wei Li, Zhe-Bin Guan +1

Density matrix embedding theory (DMET), which is usually based on a Schmidt decomposition of Slater determinants by partitioning the full system into impurity and environment in te…

physics.chem-ph2026★ 1 cited

Geometric Phase Effect in Thermodynamic Properties and in the Imaginary-Time Multi-Electronic-State Path Integral Formulation

Yu Zhai, Youhao Shang, Jian Liu

The geometric phase (GP) is a fundamental quantum effect arising from conical intersections (CIs), with profound consequences for vibronic energy levels. Standard imaginary-time pa…

physics.chem-ph2025★ 17 cited

Nonadiabatic Field: A Conceptually Novel Approach for Nonadiabatic Quantum Molecular Dynamics

Baihua Wu, Bingqi Li, Xin He +3

Reliable trajectory-based nonadiabatic quantum dynamics methods at the atomic level are critical for understanding many important processes in real systems. The paper reports lates…

physics.chem-ph2025★ 3 cited

Twin-Space Representation of Classical Mapping Model in the Constraint Phase Space Representation: Numerically Exact Approach to Open Quantum Systems

Jiaji Zhang, Jian Liu, Lipeng Chen

The constraint coordinate-momentum \textit{phase space} (CPS) has recently been developed to study nonadiabatic dynamics in gas-phase and condensed-phase molecular systems. Althoug…

physics.chem-ph2022★ 68 cited

Unified Formulation of Phase Space Mapping Approaches for Nonadiabatic Quantum Dynamics

Jian Liu, Xin He, Baihua Wu

Nonadiabatic dynamical processes are one of the most important quantum mechanical phenomena in chemical, materials, biological, and environmental molecular systems, where the coupl…

physics.chem-ph2022★ 25 cited

SOiCI and iCISO: Combining iterative configuration interaction with spin-orbit coupling in two ways

Ning Zhang, Yunlong Xiao, Wenjian Liu

The near-exact iCIPT2 approach for strongly correlated systems of electrons, which stems from the combination of iterative configuration interaction (iCI, an exact solver of full C…

physics.chem-ph2021★ 38 cited

Commutator Matrix in Phase Space Mapping Models for Nonadiabatic Quantum Dynamics

Xin He, Baihua Wu, Zhihao Gong +1

We show that a novel, general phase space mapping Hamiltonian for nonadiabatic systems, which is reminiscent of the renowned Meyer-Miller mapping Hamiltonian, involves a commutator…

physics.chem-ph2021★ 1 cited

Binding Sites, Vibrations and Spin-Lattice Relaxation Times in Europium(II)-based Metallofullerene Spin Qubits

Ziqi Hu, Aman Ullah, Helena Prima-Garcia +6

To design molecular spin qubits with enhanced quantum coherence, a control of the coupling between the local vibrations and the spin states is crucial, which could be realized in p…

physics.chem-ph2020★ 1 cited

Further Development of iCIPT2 for Strongly Correlated Electrons

Ning Zhang, Wenjian Liu, Mark R. Hoffmann

The efficiency of the recently proposed iCIPT2 [iterative configuration interaction (iCI) with selection and second-order perturbation theory (PT2); J. Chem. Theory Comput. 16, 229…

physics.chem-ph2020★ 42 cited

Deep Reinforcement Learning of Transition States

Jun Zhang, Yao-Kun Lei, Zhen Zhang +5

Combining reinforcement learning (RL) and molecular dynamics (MD) simulations, we propose a machine-learning approach (RL) to automatically unravel chemical reaction mechanisms…

physics.chem-ph2020★ 156 cited

The Ground State Electronic Energy of Benzene

Janus J. Eriksen, Tyler A. Anderson, J. Emiliano Deustua +21

We report on the findings of a blind challenge devoted to determining the frozen-core, full configuration interaction (FCI) ground state energy of the benzene molecule in a standar…

physics.chem-ph2020★ 12 cited

Quantum-chemistry-aided identification, synthesis and experimental validation of model systems for conformationally controlled reaction studies: Separation of the conformers of 2,3-dibromobuta-1,3-diene in the gas phase

Ardita Kilaj, Hong Gao, Diana Tahchieva +6

The Diels-Alder cycloaddition, in which a diene reacts with a dienophile to form a cyclic compound, counts among the most important tools in organic synthesis. Achieving a precise…

physics.chem-ph2020★ 1.2k cited

Recent developments in the PySCF program package

Qiming Sun, Xing Zhang, Samragni Banerjee +46

PYSCF is a Python-based general-purpose electronic structure platform that both supports first-principles simulations of molecules and solids, as well as accelerates the developmen…

physics.chem-ph2019

Iterative Configuration Interaction with Selection

Ning Zhang, Wenjian Liu, Mark R. Hoffmann

Even when starting with a very poor initial guess, the iterative configuration interaction (iCI) approach can converge from above to full CI very quickly by constructing and diagon…

physics.chem-ph2019★ 33 cited

Energy, Momentum and Angular Momentum Transfer Between Electrons and Nuclei

Chen Li, Ryan Requist, E. K. U. Gross

The recently developed exact factorization approach condenses all electronic effects on the nuclear subsystem into scalar and vector potentials that appear in an effective time dep…

physics.chem-ph2018★ 130 cited

Observation of different reactivities of para- and ortho-water towards cold diazenylium ions

Ardita Kilaj, Hong Gao, Daniel Rösch +3

Water, HO, is one of the fundamental molecules in chemistry, biology and astrophysics. It exists as two distinct nuclear-spin isomers, para- and ortho-water, which do not inter…

physics.chem-ph2017★ 41 cited

Critical role of quantum dynamical effects in the Raman spectroscopy of liquid water

Xinzijian Liu, Jian Liu

Understanding the Raman spectroscopy at the atomistic level is important for the elucidation of dynamical processes in liquid water. Because the polarizability (or its time derivat…

physics.chem-ph2017★ 25 cited

Path Integral Molecular Dynamics for Exact Quantum Statistics of Multi-Electronic-State Systems

Xinzijian Liu, Jian Liu

An exact approach to compute physical properties for general multi-electronic-state (MES) systems in thermal equilibrium is presented. The approach is extended from our recent prog…

physics.chem-ph2017★ 28 cited

Stationary state distribution and efficiency analysis of the Langevin equation via real or virtual dynamics

Dezhang Li, Xu Han, Yichen Chai +5

Langevin dynamics has become a popular tool to simulate the Boltzmann equilibrium distribution. When the repartition of the Langevin equation involves the exact realization of the…

physics.chem-ph2017★ 90 cited

A unified thermostat scheme for efficient configurational sampling for classical/quantum canonical ensembles via molecular dynamics

Zhijun Zhang, Xinzijian Liu, Zifei Chen +3

We show a unified second-order scheme for constructing simple, robust and accurate algorithms for typical thermostats for configurational sampling for the canonical ensemble. When…

physics.chem-ph2017★ 60 cited

Intrinsic Charge Transport in Stanene: Roles of Bucklings and Electron-Phonon Couplings

Yuma Nakamura, Tianqi Zhao, Jinyang Xi +3

The intrinsic charge transport of stanene is investigated by using density function theory and density function perturbation theory coupled with Boltzmann transport equations from…

physics.chem-ph2016★ 23 cited

Isomorphism between the multi-state Hamiltonian and the second-quantized many-electron Hamiltonian with only 1-electron interactions

Jian Liu

We introduce the isomorphism between the multi-state Hamiltonian and the second-quantized many-electron Hamiltonian (with only 1-electron interactions). This suggests that all meth…

physics.chem-ph2016★ 85 cited

A Unified Theoretical Framework for Mapping Models for the Multi-State Hamiltonian

Jian Liu

We propose a new unified theoretical framework to construct equivalent representations of the multi-state Hamiltonian operator and present several approaches for the mapping onto t…

physics.chem-ph2016★ 57 cited

The Anion Effect on Li+ Ion Coordination Structure in Ethylene Carbonate Solutions

Bo Jiang, Veerapandian Ponnuchamy, Yuneng Shen +7

Rechargeable lithium ion batteries are an attractive alternative power source for a wide variety of applications. To optimize their performances, a complete description of the solv…