Maximum propagation speed and Cherenkov effect in optical phonon transport through periodic molecular chainsOptical phonons serve as the fast and efficient carriers of energy across periodic polymers due to their delocalization, large group velocity because of covalent bonding and large energy quantum…Alexander L. Burin, Igor V. Parshin, Igor V. Rubtsov·May 15, 2023SaveLearn
A multi-state mapping approach to surface hoppingWe describe a multiple electronic state adaptation of the mapping approach to surface hopping introduced recently by Mannouch and Richardson (J. Chem. Phys. 158, 104111 (2023)). This adaptation…Johan E. Runeson, David E. Manolopoulos·May 15, 2023SaveLearn
A photo-mechanical coupling theory for photoisomerization hydrogel considering the distribution state of molecular chainsOwing to the possibility of controlling its specific mechanical behaviors up taken by irradiated by light at particular wavelengths, the photoisomerization hydrogels have a broad range of potential…Xinyu Liu, Qingsheng Yang, Wei Rao·May 15, 2023SaveLearn
Frustrated hops in Ring Polymer Surface Hopping: Real-time dynamics and detailed balanceRing Polymer Surface-Hopping (RPSH) has been recently introduced as a well-tailored method for incorporating nuclear quantum effects (NQEs), such as zero-point energy and tunneling, into…Dil K. Limbu, Farnaz A. Shakib·May 14, 2023SaveLearn
An ab initio correction vector restricted active space approach to the L-edge XAS and 2p3d RIXS spectra of transition metal clustersWe describe an ab initio approach to simulate L-edge X-ray absorption (XAS) and 2p3d resonant inelastic X-ray scattering (RIXS) spectroscopies. We model the strongly correlated electronic structure…Seunghoon Lee, Huanchen Zhai, Garnet Kin-Lic Chan·May 14, 2023SaveLearn
Reproducing Reaction Route Map on the Shape Space from its Quotient by Complete Nuclear Permutation-Inversion groupThis study develops an algorithm to reproduce reaction route maps (RRMs) in shape space from the outputs of potential search algorithms. To demonstrate this, GRRM is utilized as a potential search…Hiroshi Teramoto, Takuya Saito, Masamitsu Aoki et al.·May 14, 2023SaveLearn
DFT+U Type Strong Correlation Functional Derived from Multiconfigurational Wavefunction TheoryWe present a DFT+U-type functional for strong correlation, derived from multiconfigurational wavefunction theory. The reference system experiences electron-electron interactions only in DFT+U-type…Benjamin G. Janesko·May 12, 2023SaveLearn
HF trimer: 12D fully coupled quantum calculations of HF-stretch excited intramolecular and intermolecular vibrational states using contracted bases of intramolecular and intermolecular eigenstatesWe present the computational methodology which for the first time allows rigorous twelve-dimensional (12D) quantum calculations of the coupled intramolecular and intermolecular vibrational states of…Peter M. Felker, Zlatko Bačić·May 12, 2023SaveLearn
Approximate Exponential Integrators for Time-Dependent Equation-of-Motion Coupled Cluster TheoryWith growing demand for time-domain simulations of correlated many-body systems, the development of efficient and stable integration schemes for the time-dependent Schr\"odinger equation is of keen…David B. Williams-Young, Stephen Yuwono, A. Eugene DePrince et al.·May 12, 2023SaveLearn
Steady state effects introduced by local relaxation modes on J-driven DNP-enhanced NMROne of solution-state Nuclear Magnetic Resonance (NMR)'s main weaknesses, is its relative insensitivity. J-driven Dynamic Nuclear Polarization (JDNP) was recently proposed for enhancing the…Maria Grazia Concilio, Lucio Frydman·May 12, 2023SaveLearn
Quantum Dynamics of Photoactive Transition Metal Complexes. A Case Study of Model ReductionTransition metal complexes for photochemical applications often feature a high density of electron-vibrational states characterized by nonadiabatic and spin-orbit couplings. Overall, the dynamics…Olga Bokareva, Oliver Kühn·May 12, 2023SaveLearn
How Quantum is the Resonance Behavior in Vibrational Polariton Chemistry?Recent experiments in polariton chemistry have demonstrated that reaction rates can be modified by vibrational strong coupling to an optical cavity mode. Importantly, this modification only occurs…Marit R. Fiechter, Johan E. Runeson, Joseph E. Lawrence et al.·May 12, 2023SaveLearn
Multireference protonation energetics of a dimeric model of nitrogenase iron-sulfur clustersCharacterizing the electronic structure of the iron--sulfur clusters in nitrogenase is necessary to understand their role in the nitrogen fixation process. One challenging task is to determine the…Huanchen Zhai, Seunghoon Lee, Zhi-Hao Cui et al.·May 12, 2023SaveLearn
Hammett-Inspired Product Baseline for Data-efficient -ML in Chemical SpaceData-hungry machine learning methods have become a new standard to efficiently navigate chemical compound space for molecular and materials design and discovery. Due to the severe scarcity and cost…V. Diana Rakotonirina, Marco Bragato, Guido Falk von Rudorff et al.·May 11, 2023SaveLearn
Strengths and limitations of the adiabatic exact-exchange kernel for total energy calculationsWe investigate the adiabatic approximation to the exact-exchange kernel for calculating correlation energies within the adiabatic-connection fluctuation-dissipation framework of time-dependent…Maria Hellgren, Lucas Baguet·May 11, 2023SaveLearn
A Nanocar and Rotor in One MoleculeDepending on its adsorption conformation on the Au(111) surface, a zwitterionic single-molecule machine works in two different ways under bias voltage pulses. It is a unidirectional rotor while…K. H. Au-Yeung, S. Sarkar, T. Kühne et al.·May 11, 2023SaveLearn
Predictive ability comparison of different versions of some well known degree dependent topological indicesTo avoid extensive lab work on properties of chemical compounds, QSPR/QSAR analysis for topological descriptors is a productive statistical approach to analyze various physicochemical properties of…A. Bharali, Mohammad Essa Nazari, Amanullah Nabavi·May 11, 2023SaveLearn
Multiconfigurational quantum chemistry: The CASPT2 methodThis chapter presents the theory behind the CASPT2 method and its adaptation to a multi-state formalism. The chapter starts with an introduction of the theory of the CASPT2 method - an application of…Stefano Battaglia, Ignacio Fdez. Galván, Roland Lindh·May 11, 2023SaveLearn
N-Representability Violations in Truncated Equation-of-Motion Coupled-Cluster MethodsOne-electron reduced density matrices (1RDMs) from equation-of-motion (EOM) coupled-cluster with single and double excitations (CCSD) calculations are analyzed to assess their N-representability…Stephen H. Yuwono, A. Eugene DePrince·May 10, 2023SaveLearn
Time-Dependent Equation-of-Motion Coupled-Cluster Simulations with a Defective HamiltonianSimulations of laser-induced electron dynamics in a molecular system are performed using time-dependent (TD) equation-of-motion (EOM) coupled-cluster (CC) theory. The target system has been chosen to…Stephen H. Yuwono, Brandon C. Cooper, Tianyuan Zhang et al.·May 10, 2023SaveLearn
Graph Neural Network Interatomic Potential Ensembles with Calibrated Aleatoric and Epistemic Uncertainty on Energy and ForcesInexpensive machine learning potentials are increasingly being used to speed up structural optimization and molecular dynamics simulations of materials by iteratively predicting and applying…Jonas Busk, Mikkel N. Schmidt, Ole Winther et al.·May 10, 2023SaveLearn
Reactions of Acetonitrile with Trapped, Translationally Cold Acetylene CationsThe reaction of the acetylene cation (C2H2+) with acetonitrile (CH3CN) is measured in a linear Paul ion trap coupled to a time-of-flight mass spectrometer. C2H2+ and CH3CN are both noted for their…O. A. Krohn, K. J. Catani, S. P. Sundar et al.·May 9, 2023SaveLearn
Coarse-grained versus fully atomistic machine learning for zeolitic imidazolate frameworksZeolitic imidazolate frameworks are widely thought of as being analogous to inorganic AB2 phases. We test the validity of this assumption by comparing simplified and fully atomistic…Zoé Faure Beaulieu, Thomas C. Nicholas, John L. A. Gardner et al.·May 9, 2023SaveLearn
Surface characterisation of template-synthesised multi-walled carbon nanotubesPhysisorption studies and transmission electron microscopy have been used to characterise multi-walled carbon nanotubes (MWNTs) made by a template-synthesis technique. Microscopic investigations…M. -R. Babaa, E. Mcrae, Sandrine Delpeux et al.·May 9, 2023SaveLearn
KineticNet: Deep learning a transferable kinetic energy functional for orbital-free density functional theoryOrbital-free density functional theory (OF-DFT) holds the promise to compute ground state molecular properties at minimal cost. However, it has been held back by our inability to compute the kinetic…Roman Remme, Tobias Kaczun, Maximilian Scheurer et al.·May 8, 2023SaveLearn