LRPAFORCE: Difference between revisions
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m Forces are supported for metals |
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{{NB|mind|The RPA stress tensor is not available.}} | {{NB|mind|The RPA stress tensor is not available.}} | ||
{{NB|warning|Only {{TAG|ISIF}}{{=}}0 is supported.}} | {{NB|warning|Only {{TAG|ISIF}}{{=}}0 is supported.}} | ||
== Related tags and articles == | == Related tags and articles == | ||
Revision as of 16:25, 9 December 2024
LRPAFORCE = .TRUE. | .FALSE.
Default: LRPAFORCE = .FALSE.
Description: LRPAFORCE=.TRUE. calculates forces in the random-phase approximation (RPA).
Available as of VASP.6.1.
This tag can be optionally set in low-scaling RPA calculations or GW calculations. It allows computing the RPA forces[1] on each ion. For instance,
ALGO = RPAR ; LRPAFORCE = .TRUE.
computes the RPA total energy with corresponding forces, while
ALGO = G0W0R ; LRPAFORCE = .TRUE.
determines in addition the quasiparticle energies within the GW approximation.
The LRPAFORCE tag can be used in combination with the standard relaxation options IBRION and NSW.
| Mind: The RPA stress tensor is not available. |
| Warning: Only ISIF=0 is supported. |
Related tags and articles
NBANDS, ALGO, IBRION, NSW, POTIM, RPA calculations, GW calculations