ANTIRES: Difference between revisions
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{{TAGDEF|ANTIRES|0 {{!}} 1 {{!}} 2|0}} | {{TAGDEF|ANTIRES|0 {{!}} 1 {{!}} 2|0}} | ||
Description: | Description: {{TAG|ANTIRES}} determines whether the Tamm-Dancoff approximation is used or not. | ||
is used or not. | |||
---- | ---- | ||
*{{TAG|ANTIRES}}=0 Tamm-Dancoff | *{{TAG|ANTIRES}}=0 Tamm-Dancoff approximation (TDA) | ||
*{{TAG|ANTIRES}}=1 yields exact results at | *{{TAG|ANTIRES}}=1 yields exact results at ω{{=}}0 at roughly the same cost as TDA | ||
*{{TAG|ANTIRES}}=2 beyond Tamm-Dancoff, coupling between positive and negative frequencies | *{{TAG|ANTIRES}}=2 beyond Tamm-Dancoff, coupling between positive and negative frequencies | ||
VASP uses the procedures outlined in | VASP uses the procedures outlined in reference <ref name="Sander"/> to include contributions beyond TDA. Beyond-TDA calculations increase the computational time and memory requirements by typically a factor of 2. | ||
beyond | |||
2. | |||
== Related tags and articles == | |||
{{TAG|BSE calculations}} | |||
{{sc|ANTIRES|Examples|Examples that use this tag}} | |||
== References == | |||
<references> | |||
<ref name="Sander">[http://journals.aps.org/prb/abstract/10.1103/PhysRevB.92.045209 T. Sander, E. Maggio and G. Kresse, Phys. Rev. B 92, 045209 (2015).]</ref> | |||
</references> | |||
---- | ---- | ||
[[Category:INCAR]] [[Category: | [[Category:INCAR tag]][[Category:Many-body perturbation theory]][[Category:Bethe-Salpeter equations]] | ||
Latest revision as of 10:19, 7 April 2022
ANTIRES = 0 | 1 | 2
Default: ANTIRES = 0
Description: ANTIRES determines whether the Tamm-Dancoff approximation is used or not.
- ANTIRES=0 Tamm-Dancoff approximation (TDA)
- ANTIRES=1 yields exact results at ω=0 at roughly the same cost as TDA
- ANTIRES=2 beyond Tamm-Dancoff, coupling between positive and negative frequencies
VASP uses the procedures outlined in reference [1] to include contributions beyond TDA. Beyond-TDA calculations increase the computational time and memory requirements by typically a factor of 2.