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LRHFCALC: Difference between revisions

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{{TAGDEF|LRHFCALC|.TRUE. {{!}} .FALSE. |.FALSE.}}
{{TAGDEF|LRHFCALC|.TRUE. {{!}} .FALSE. |.FALSE.}}


Description: {{TAG|LRHFCALC}} selects the decomposition of the exchange functional for calculations with the [[:Category:Hybrid_functionals|range-separated hybrid RSHX functional]].
Description: Switch on the decomposition of the exchange functional for the [[Hybrid_functionals:_formalism#Error_function_screening_with_long-range_Hartree-Fock_exchange|range-separated hybrid RSHXLDA or RSHXPBE functionals]].
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If {{TAG|LRHFCALC}}=.TRUE. the exchange operator is decomposed into short-range LDA (or PBE) and long-range Hartree-Fock for calculations with the range-separated hybrid RSHX functional.{{cite|gerber:cpl:2005}}{{cite|gerber:jcp:2007}} The screening parameter is specified by means of the {{TAG|HFSCREEN}} tag.
If {{TAG|LRHFCALC}}=.TRUE. the exchange functional is decomposed into short-range LDA (or PBE) and long-range Hartree-Fock for calculations with the range-separated hybrid RSHXLDA or RSHXPBE functionals.{{cite|iikura:jcp:2001}}{{cite|gerber:cpl:2005}}{{cite|gerber:jcp:2007}} The screening parameter is specified by means of the {{TAG|HFSCREEN}} tag.


The setting of the RSHXLDA and RSHXPBE functionals is shown on the [[list_of_hybrid_functionals|page listing the hybrid functionals]].
{{NB|mind|
{{NB|mind|
*If {{TAG|LRHFCALC}}{{=}}.TRUE., then automatically {{TAG|LHFCALC}}{=}}.TRUE.
*If {{TAG|LRHFCALC}}{{=}}.TRUE., then {{TAG|LHFCALC}}{{=}}.TRUE. is automatically set.
*By default, {{TAG|AEXX}}{{=}}1 for the RSHX functional, but {{TAG|AEXX}} can be set to another value.
*If {{TAG|LRHFCALC}}{{=}}.TRUE., then {{TAG|AEXX}}{{=}}1 is automatically set, but {{TAG|AEXX}} can be set to another value.}}
*Only LDA ({{TAG|GGA}}{{=}}CA or PZ) or PBE ({{TAG|GGA}}{{=}}PE) can be used for the short-range density functional part.}}


== Related tags and articles ==
== Related tags and articles ==
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{{TAG|AEXX}},
{{TAG|AEXX}},
{{TAG|LTHOMAS}},
{{TAG|LTHOMAS}},
[[list_of_hybrid_functionals|list_of_hybrid_functionals]]
[[list_of_hybrid_functionals|list of hybrid functionals]],
[[Hybrid_functionals:_formalism|Hybrid functionals: formalism]]


{{sc|LRHFCALC|Examples|Examples that use this tag}}
{{sc|LRHFCALC|Examples|Examples that use this tag}}

Latest revision as of 05:39, 20 October 2023

LRHFCALC = .TRUE. | .FALSE.
Default: LRHFCALC = .FALSE. 

Description: Switch on the decomposition of the exchange functional for the range-separated hybrid RSHXLDA or RSHXPBE functionals.


If LRHFCALC=.TRUE. the exchange functional is decomposed into short-range LDA (or PBE) and long-range Hartree-Fock for calculations with the range-separated hybrid RSHXLDA or RSHXPBE functionals.[1][2][3] The screening parameter is specified by means of the HFSCREEN tag.

The setting of the RSHXLDA and RSHXPBE functionals is shown on the page listing the hybrid functionals.

Related tags and articles

LHFCALC, HFSCREEN, AEXX, LTHOMAS, list of hybrid functionals, Hybrid functionals: formalism

Examples that use this tag