Usefulness of Higher Order of System-Size Correction for Diffusion Coefficients of Macromolecules: A Molecular Dynamics StudyYeh and Hummer's simplified estimation method has often been adopted to obtain diffusion coefficients for solute molecules using molecular dynamic simulation. However, the simplified formula is…Tomoya Iwashita, Masaaki Nagao, Akira Yoshimori et al.·May 19, 2022SaveLearn
A simple improved low temperature correction for the hierarchical equations of motionThe study of open system quantum dynamics has been transformed by the hierarchical equations of motion (HEOM) method, which gives the exact dynamics for a system coupled to a harmonic bath at…Thomas P Fay·May 19, 2022SaveLearn
Ro-vibrational energy and thermodynamic properties of molecules subjected to Deng-Fan potential through an improved approximationAccurate solution of the Schrödinger equation with Deng-Fan potential is presented by means of Nikiforov-Uvarov method. A modified Pekeris-type approximation is proposed for the centrifugal term,…Debraj Nath, Amlan K. Roy·May 19, 2022SaveLearn
What is the number of electrons in a spatial domain?We like to attribute a number of electrons to spatial domains (atoms, bonds, ...). However, as a rule, the number of electrons in a spatial domain is not a sharp number. We thus study probabilities…Anthony Scemama, Andreas Savin·May 19, 2022SaveLearn
Three Lagrangians for the complete-active space coupled-cluster methodThree fully variational formulations of the complete-active space coupled-cluster (CASCC) method are derived. The formulations include the ability to approximate the model vectors by smooth…Simen Kvaal·May 18, 2022SaveLearn
A self-consistent systematic optimization of range-separated hybrid functionals from first principlesIn this communication, we represent a self-consistent systematic optimization procedure for the development of optimally tuned (OT) range-separated hybrid (RSH) functionals from first…Abhisek Ghosal, Amlan K. Roy·May 18, 2022SaveLearn
Electron-Affinity Time-Dependent Density Functional Theory: Formalism and Applications to Core-Excited StatesThe particle-hole interaction problem is longstanding within time-dependent density functional theory (TDDFT) and leads to extreme errors in the prediction of K-edge X-ray absorption spectra (XAS).…Kevin Carter-Fenk, Leonardo A. Cunha, Juan E. Arias-Martinez et al.·May 17, 2022SaveLearn
Quasiparticle Self-Consistent GW-Bethe-Salpeter equation calculations for large chromophoric systemsThe GW-Bethe-Salpeter Equation (BSE) method is promising for calculating the low-lying excited states of molecular systems. So far, it has only been applied to rather small molecules, and in the…Arno Förster, Lucas Visscher·May 17, 2022SaveLearn
Specific versus Nonspecific Solvent Interactions of a Biomolecule in WaterSolvent interactions, particularly hydration, are vital in chemical and biochemical systems. Model systems unveil microscopic details of such interactions. We uncover a specific hydrogen-bonding…Lanhai He, Lukáš Tomaník, Sebastian Malerz et al.·May 17, 2022SaveLearn
Accurate Machine Learned Quantum-Mechanical Force Fields for Biomolecular SimulationsMolecular dynamics (MD) simulations allow atomistic insights into chemical and biological processes. Accurate MD simulations require computationally demanding quantum-mechanical calculations, being…Oliver T. Unke, Martin Stöhr, Stefan Ganscha et al.·May 17, 2022SaveLearn
Integrated, stretched, and adiabatic solid effectsThis paper presents a theory describing the dynamic nuclear polarization (DNP) process associated with an arbitrary frequency swept microwave pulse. The theory is utilized to explain the integrated…Yifan Quan, Jakob Steiner, Yifu Ouyang et al.·May 16, 2022SaveLearn
Electronic excited states in extreme limits via ensemble density functionalsDensity functional theory (DFT) has greatly expanded our ability to affordably compute and understand electronic ground states, by replacing intractable ab initio calculations by models based…Tim Gould, Derk P. Kooi, Paola Gori-Giorgi et al.·May 14, 2022SaveLearn
Cholesky decomposition of two-electron integrals in quantum-chemical calculations with perturbative or finite magnetic fields using gauge-including atomic orbitalsA rigorous analysis is carried out concerning the use of Cholesky decomposition (CD) of two-electron integrals in the case of quantum-chemical calculations with finite or perturbative magnetic fields…Jürgen Gauss, Simon Blaschke, Sophia Burger et al.·May 14, 2022SaveLearn
Beating signals in CdSe quantum dots measured by low-temperature 2D spectroscopyAdvances in ultrafast spectroscopy can provide access to dynamics involving nontrivial quantum correlations and their evolutions. In coherent 2D spectroscopy, the oscillatory time dependence of a…Zhengjun Wang, Albin Hedse, Edoardo Amarotti et al.·May 14, 2022SaveLearn
Probe Beam Dichroism and Birefringence in Stumulated Raman Scattering of Biologically Relevant Polyatomic MoleculesThe dichroism and birefringence effects in stumulated Raman scattering (SRS) in polyatomic molecules were studied theoretically. General expressions have been derived describing the change of the…Bogdan V. Semak, Yaroslav M. Beltukov, Oleg S. Vasyutinskii·May 13, 2022SaveLearn
Effects of compressibility and wetting on the liquid-vapor transition in a confined fluidWhen a fluid is constrained to a fixed, finite volume, the conditions for liquid-vapor equilibrium are different from the infinite volume or constant pressure cases. There is even a range of…Frédéric Caupin·May 13, 2022SaveLearn
Bethe Salpeter Equation Spectra for Very Large SystemsWe present a highly efficient method for the extraction of optical properties of very large molecules via the Bethe-Salpeter equation. The crutch of this approach is the calculation of the action of…Nadine Bradbury, Minh Nguyen, Justin R Caram et al.·May 13, 2022SaveLearn
Sample size dependence of tagged molecule dynamics in steady-state networks with bimolecular reactions: Cycle times of a light-driven pumpHere, steady-state reaction networks are inspected from the viewpoint of individual tagged molecules jumping among their chemical states upon the occurrence of reactive events. Such an agent-based…Daniele Asnicar, Emanuele Penocchio, Diego Frezzato·May 13, 2022SaveLearn
Exact Factorization Adventures: A Promising Approach for Non-bound StatesModeling the dynamics of non-bound states in molecules requires an accurate description of how electronic motion affects nuclear motion and vice-versa. The exact factorization (XF) approach offers a…Evaristo Villaseco Arribas, Federica Agostini, Neepa T. Maitra·May 13, 2022SaveLearn
Correlated driving-and-dissipation equation for non-Condon spectroscopy with the Herzberg-Teller vibronic couplingCorrelated driving-and-dissipation equation (CODDE) is an optimized complete second-order quantum dissipation approach, which is originally concerned with the reduced system dynamics only. However,…Jie Fang, Zi-Hao Chen, Yao Wang et al.·May 13, 2022SaveLearn
Data-driven approach for benchmarking DFTB-approximate excited state methodsIn this work we propose a chemically-informed data-driven approach to benchmark the approximate density-functional tight-binding (DFTB) excited state (ES) methods that are currently available within…Andrés I. Bertoni, Cristián G. Sánchez·May 12, 2022SaveLearn
pH-jumps in a Protic Ionic Liquid Proceed by Vehicular Proton TransportThe dynamics of excess protons in the protic ionic liquid ethylammonium formate (EAF) have been investigated from femtosecond to microseconds using visible pump mid-infrared probe spectroscopy. The…Sourav Maiti, Sunayana Mitra, Clinton A. Johnson et al.·May 12, 2022SaveLearn
Nonadiabatic ab initio molecular dynamics including spin-orbit coupling and laser fieldsNonadiabatic ab initio molecular dynamics (MD) including spin-orbit coupling (SOC) and laser fields is investigated as a general tool for studies of excited-state processes. Up to now, SOCs are not…Philipp Marquetand, Martin Richter, Jesús González-Vázquez et al.·May 12, 2022SaveLearn
Correction of Residual Errors in Configuration Interaction Electronic Structure CalculationsMethods for correcting residual energy errors of configuration interaction (CI) calculations of molecules and other electronic systems are discussed based on the assumption that the energy defect can…Jerry L. Whitten·May 12, 2022SaveLearn
Improved decision making with similarity based machine learning: Applications in chemistryDespite the fundamental progress in autonomous molecular and materials discovery, data scarcity throughout chemical compound space still severely hampers the use of modern ready-made machine learning…Dominik Lemm, Guido Falk von Rudorff, O. Anatole von Lilienfeld·May 11, 2022SaveLearn