Results 21 to 30 of about 1,610,034 (354)

Simulations of proton transfer processes using reactive force fields [PDF]

open access: yes, 2006
Within this thesis we presented the development of reactive force fields that are ca- pable to describe the dynamics of proton and hydrogen atom transfer processes.
Lammers, Sven
core   +1 more source

Combining the in-medium similarity renormalization group with the density matrix renormalization group: Shell structure and information entropy

open access: yesPhysics Letters B, 2023
We propose a novel many-body framework combining the density matrix renormalization group (DMRG) with the valence-space (VS) formulation of the in-medium similarity renormalization group.
A. Tichai   +7 more
doaj   +1 more source

Ab initio calculations of 5H resonant states

open access: yesPhysics Letters B, 2019
By solving the 5-body Faddeev-Yakubovsky equations in configuration space with realistic nuclear Hamiltonians we have studied the resonant states of 5H isotope.
R. Lazauskas, E. Hiyama, J. Carbonell
doaj   +1 more source

Machine learning method for tight-binding Hamiltonian parameterization from ab-initio band structure

open access: yesnpj Computational Materials, 2021
The tight-binding (TB) method is an ideal candidate for determining electronic and transport properties for a large-scale system. It describes the system as real-space Hamiltonian matrices expressed on a manageable number of parameters, leading to ...
Zifeng Wang   +5 more
doaj   +1 more source

Ab InitioCalculation of the Hoyle State

open access: yesPhysical Review Letters, 2011
4 pp, 3 eps figs, version accepted for publication in Physical Review ...
Evgeny Epelbaum   +3 more
openaire   +5 more sources

Symmetry matters: photodissociation dynamics of symmetrically versus asymmetrically substituted phenols [PDF]

open access: yes, 2014
We report a combined experimental (H (Rydberg) atom photofragment translational spectroscopy) and theoretical (ab initio electronic structure and vibronic coupling calculations) study of the effects of symmetry on the photodissociation dynamics of ...
Marchetti, Barbara   +3 more
core   +1 more source

Short range correlations and the isospin dependence of nuclear correlation functions

open access: yesPhysics Letters B, 2018
Pair densities and associated correlation functions provide a critical tool for introducing many-body correlations into a wide-range of effective theories.
R. Cruz-Torres   +7 more
doaj   +1 more source

Ab initio calculation of inelastic scattering

open access: yesPhysical Chemistry Chemical Physics, 2017
We calculate nonresonant inelastic electron and X-ray scattering cross sections for bound-to-bound transitions in atoms and molecules from ab initio electronic wavefunctions.
Andrés Moreno Carrascosa   +1 more
openaire   +3 more sources

Application of Nuclear Inelastic Scattering Spectroscopy to the Frequency Scale Calibration of Ab Initio Calculated Phonon Density of States of Quasi-One-Dimensional Ternary Iron Chalcogenide RbFeSe2

open access: yesApplied Sciences, 2020
This study aims to examine the applicability of nuclear inelastic scattering (NIS) and conventional Mössbauer spectroscopy for calibration of the frequency scale of ab initio calculated phonon density of states (PDOS) of iron ternary chalcogenides.
Airat Kiiamov   +9 more
doaj   +1 more source

SPARC: Simulation Package for Ab-initio Real-space Calculations

open access: yesSoftwareX, 2021
We present SPARC: Simulation Package for Ab-initio Real-space Calculations. SPARC can perform Kohn–Sham density functional theory calculations for isolated systems such as molecules as well as extended systems such as crystals and surfaces, in both ...
Qimen Xu   +7 more
doaj   +1 more source

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