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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 hybrids RSHXLDA or RSHXPBE functionals]].
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 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.
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.


For RSHXLDA and RSHXPBE one needs to set ({{TAG|GGA}}{{=}}CA or PZ) and PBE ({{TAG|GGA}}{{=}}PE), respectively.
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 {{TAG|LHFCALC}}{{=}}.TRUE. is automatically set.
*If {{TAG|LRHFCALC}}{{=}}.TRUE., then {{TAG|LHFCALC}}{{=}}.TRUE. is automatically set.
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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