scholarly journals Optical absorption in B[sub 13] cluster: A time-dependent density functional approach

2013 ◽  
Author(s):  
Ravindra Shinde ◽  
Meenakshi Tayade
Keyword(s):  
Optical Absorption ◽  
Density Functional ◽  
Functional Approach ◽  
Time Dependent ◽  
Cluster A ◽  
Dependent Density

EXCHANGE–CORRELATION KERNEL IN TIME-DEPENDENT DENSITY FUNCTIONAL THEORY DERIVED FROM MANY-BODY THEORY

2004 ◽  
Vol 18 (07) ◽  
pp. 1055-1067 ◽  
Author(s):  
K. KARLSSON ◽  
F. ARYASETIAWAN
Keyword(s):  
Density Functional Theory ◽  
Optical Absorption ◽  
Density Functional ◽  
Time Dependent ◽  
Many Body ◽  
Functional Theory ◽  
Correlation Kernel ◽  
Exchange Correlation ◽  
Many Body Theory ◽  
Dependent Density

We derive a simplified Bethe–Salpeter equation for calculating optical absorption based on the assumption of a local electron–hole interaction. The original four-point equation for the kernel is reduced to a two-point one. A connection to the exchange–correlation kernel in time-dependent density functional theory can be established. The resulting fxc is found to be -W/2 where W contains only the short-range (local) part of the Coulomb screened interaction. This simple approximation was successfully applied to optical absorption spectra of some excitonic crystals, reproducing not only the continuum excitons but also the bound ones.

Molecular transport through mixed matrix membranes: A time-dependent density functional approach

AIChE Journal ◽  
2017 ◽  
Vol 63 (10) ◽  
pp. 4586-4594 ◽  
Author(s):  
Yu Liu ◽  
Fangyuan Guo ◽  
Jun Hu ◽  
Honglai Liu ◽  
Ying Hu
Keyword(s):  
Density Functional ◽  
Molecular Transport ◽  
Functional Approach ◽  
Time Dependent ◽  
Mixed Matrix Membranes ◽  
Mixed Matrix ◽  
Dependent Density ◽  
Matrix Membranes
Sign in / Sign up

Export Citation Format

Share Document