Photodissociation of OCS: Deviations between theory and experiment, and the importance of higher order correlation effects

2014 ◽  
Vol 141 (18) ◽  
pp. 184310 ◽  
Author(s):  
J. A. Schmidt ◽  
J. M. H. Olsen
Keyword(s):  
Higher Order ◽  
Correlation Effects ◽  
Theory And Experiment

scholarly journals Wavelengths of the 3p-3d Transitions of the Co- and Fe-LIKE Ions: The Effects of Electron Correlation

1988 ◽  
Vol 102 ◽  
pp. 103-105
Author(s):  
M.H. Chen
Keyword(s):  
Electron Correlation ◽  
Theoretical Calculations ◽  
Highly Charged Ions ◽  
Heavy Elements ◽  
Correlation Effects ◽  
Electron Correlation Effects ◽  
Charged Ions ◽  
Theory And Experiment

AbstractThe experimental observations of the 3p63d92D – 3p53d102P transitions of the Co-like ions and 3p63d83F4– 3p53d93F3of the Fe-like ions have recently been extended to highly charged ions of heavy elements up to uranium (Z = 92). A comparison between the observed energies and calculated values from the Dirac-Fock model indicated persistent discrepancies of 3–4 eV for all ions. Systematic multiconfiguration Dirac–Fock calculations for these transitions have been carried out with emphasis on the effects of electron correlation. The previously found discrepancies between theory and experiment have mostly been removed after the inclusion of the electron–electron correlation effects in the theoretical calculations.

Higher-order approximation for free shear layers in almost rigid rotations

1975 ◽  
Vol 69 (1) ◽  
pp. 191-195 ◽  
Author(s):  
L. Pamela Cook ◽  
G. S. S. Ludford
Keyword(s):  
Angular Velocity ◽  
Order Approximation ◽  
Shear Layers ◽  
Higher Order ◽  
Rigid Rotation ◽  
Free Shear Layer ◽  
Curvature Effects ◽  
Parallel Disks ◽  
Free Shear Layers ◽  
Theory And Experiment

The free shear layer stemming from a discontinuity in angular velocity at either of two parallel disks in almost rigid rotation with fluid between is re-examined. The sole discrepancy between theory and experiment is unaffected by higher-order approximation unless curvature effects are included, when it is reduced.

Wave-number dependence of the static screening function of an interacting electron gas. II. Higher-order exchange and correlation effects

1970 ◽  
Vol 48 (2) ◽  
pp. 167-181 ◽  
Author(s):  
D. J. W. Geldart ◽  
Roger Taylor
Keyword(s):  
Density Dependence ◽  
Ground State ◽  
Electron Gas ◽  
Perturbation Expansion ◽  
Interpolation Formula ◽  
Higher Order ◽  
Wave Number ◽  
Correlation Effects ◽  
Many Body ◽  
Static Screening

An interpolation formula is suggested for the wave-number and density dependence of the static screening function for an interacting electron gas in its ground state. The approximate screening function simulates a number of properties of the exact screening function which have been established by analysis of its many-body perturbation expansion. The accuracy of the interpolation formula is discussed and is considered to be adequate for practical calculations in the range of intermediate metallic densities.

Higher-order correlation effects to the solution of the Hubbard model

2000 ◽  
Vol 61 (8) ◽  
pp. 5158-5168 ◽  
Author(s):  
Hong-Gang Luo ◽  
Shun-Jin Wang
Keyword(s):  
Hubbard Model ◽  
Higher Order ◽  
Correlation Effects
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