Many-Body I - TDDFT.org
Many-Body I - TDDFT.org
Many-Body I - TDDFT.org
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GW vs. DFT / <strong>TDDFT</strong><br />
Method<br />
DFT / <strong>TDDFT</strong><br />
Advantages<br />
Inexpensive (esp.<br />
density-based<br />
functionals)<br />
Disadvantages<br />
XC functional and<br />
f xc (r,r′,ω) pathological<br />
and can be difficult to<br />
approximate<br />
sufficiently accurately<br />
Intermediate approaches such as GW-based orbital functionals<br />
(KS/GKS)<br />
GW (+ MBPT)<br />
Description of XC<br />
explicit diagrammatic<br />
series, better behaved<br />
Can be expensive<br />
<strong>Many</strong>-body theory and <strong>TDDFT</strong> - Benasque, 30/31 Aug 2006 22
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