LADDER - Revision history

Huebsch at 08:41, 3 November 2025

2025-11-03T08:41:24Z

← Older revision		Revision as of 08:41, 3 November 2025
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	{{TAG\|LHARTREE}},		{{TAG\|LHARTREE}},
	{{TAG\|LOPTICS}},		{{TAG\|LOPTICS}},
	~~{{TAG\|BSE_calculations}}~~

	{{sc\|LADDER\|~~Examples~~\|~~Examples~~ that use this tag}}		[[BSE calculations]]

			{{sc\|LADDER\|Howto\|Workflows that use this tag}}
	----		----

	[[Category:INCAR tag]][[Category:Many-body perturbation theory]][[Category:Bethe-Salpeter equations]]		[[Category:INCAR tag]][[Category:Many-body perturbation theory]][[Category:Bethe-Salpeter equations]]

2024-07-17T14:54:51Z

← Older revision		Revision as of 14:54, 17 July 2024
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	\|{{TAG\|LHARTREE}} \|\| {{TAG\|LADDER}} \|\|		\|{{TAG\|LHARTREE}} \|\| {{TAG\|LADDER}} \|\|
	\|-		\|-
	\| .TRUE. \|\| .TRUE. \|\| full BSE		\| .TRUE. \|\| .TRUE. \|\| full BSE / TDHF
	\|-		\|-
	\| .FALSE. \|\| .TRUE. \|\| only excitonic effects (ladders)		\| .FALSE. \|\| .TRUE. \|\| only excitonic effects (ladders)

2024-07-17T14:50:58Z

← Older revision		Revision as of 14:50, 17 July 2024
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	\|{{TAG\|LHARTREE}} \|\| {{TAG\|LADDER}} \|\|		\|{{TAG\|LHARTREE}} \|\| {{TAG\|LADDER}} \|\|
	\|-		\|-
	\| .TRUE. \|\| .TRUE. \|\| full BSE ~~/ TDDFT~~		\| .TRUE. \|\| .TRUE. \|\| full BSE
	\|-		\|-
	\| .FALSE. \|\| .TRUE. \|\| only excitonic effects (ladders)		\| .FALSE. \|\| .TRUE. \|\| only excitonic effects (ladders)

2024-07-17T14:50:38Z

← Older revision		Revision as of 14:50, 17 July 2024
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	\|{{TAG\|LHARTREE}} \|\| {{TAG\|LADDER}} \|\|		\|{{TAG\|LHARTREE}} \|\| {{TAG\|LADDER}} \|\|
	\|-		\|-
	\| .TRUE. \|\| .TRUE. \|\| full BSE		\| .TRUE. \|\| .TRUE. \|\| full BSE / TDDFT
	\|-		\|-
	\| .FALSE. \|\| .TRUE. \|\| only excitonic effects (ladders)		\| .FALSE. \|\| .TRUE. \|\| only excitonic effects (ladders)

2022-04-08T14:25:49Z

2022-04-07T12:11:12Z

← Older revision		Revision as of 12:11, 7 April 2022
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	{{TAGDEF\|LADDER\|[logical]\| .NOT. {{TAG\|LRPA}}}}		{{TAGDEF\|LADDER\|[logical]\| .NOT. {{TAG\|LRPA}}}}

	Description: Controls whether the ladder diagrams are included in the {{TAG\|BSE}} calculation. Note that the default		Description: Controls whether the ladder diagrams are included in the {{TAG\|BSE}} calculation. Note that the default for {{TAG\|LRPA}} and therefore LADDER is somewhat convoluted; so better to always double-check the {{TAG\|OUTCAR}} file whether VASP behaves as expected. Generally, VASP will select ladder diagrams whenever this seems reasonable. This is for instance the case for {{TAG\|ALGO}}="BSE" or "TDHF" calculations.
	for {{TAG\|LRPA}} and therefore LADDER is somewhat convoluted; so better to always double check the {{TAG\|OUTCAR}} file
	whether VASP behaves as expected. Generally, VASP will select ladder diagrams whenever this seems reasonable.
	This is for instance the case for {{TAG\|ALGO}} "BSE" or "TDHF" calculations.

	----		----
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	the {{TAG\|WAVEDER}} file from an existing {{TAG\|WAVECAR}} file.		the {{TAG\|WAVEDER}} file from an existing {{TAG\|WAVECAR}} file.

	== Related ~~Tags~~ and ~~Sections~~ ==		== Related tags and articles ==
	{{TAG\|LHARTREE}},		{{TAG\|LHARTREE}},
	{{TAG\|LOPTICS}},		{{TAG\|LOPTICS}},
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	----		----

	[[Category:INCAR]][[Category:Many-~~Body Perturbation Theory~~]][[Category:~~BSE~~]]		[[Category:INCAR]][[Category:Many-body perturbation theory]][[Category:Bethe-Salpeter equations]]

2019-03-20T06:45:36Z

← Older revision		Revision as of 06:45, 20 March 2019
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	{{TAGDEF\|LADDER\|[logical]\| .NOT. {{TAG\|LRPA}}}		{{TAGDEF\|LADDER\|[logical]\| .NOT. {{TAG\|LRPA}}}}

	Description: Controls whether the ladder diagrams are included in the {{TAG\|BSE}} calculation. Note that the default		Description: Controls whether the ladder diagrams are included in the {{TAG\|BSE}} calculation. Note that the default

2019-03-11T15:06:01Z

← Older revision		Revision as of 15:06, 11 March 2019
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	{{sc\|LADDER\|Examples\|Examples that use this tag}}		{{sc\|LADDER\|Examples\|Examples that use this tag}}
	----		----
	~~[[The_VASP_Manual\|Contents]]~~

	[[Category:INCAR]][[Category:Many-Body Perturbation Theory]][[Category:BSE]]		[[Category:INCAR]][[Category:Many-Body Perturbation Theory]][[Category:BSE]]

2019-03-11T14:53:06Z

← Older revision		Revision as of 14:53, 11 March 2019
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	[[The_VASP_Manual\|Contents]]		[[The_VASP_Manual\|Contents]]

	[[Category:INCAR]][[Category:BSE]]		[[Category:INCAR]][[Category:Many-Body Perturbation Theory]][[Category:BSE]]

2018-01-30T12:55:57Z

← Older revision		Revision as of 12:55, 30 January 2018
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	{{TAG\|LADDER}} is used together with {{TAG\|LHARTREE}}. If {{TAG\|LADDER}}=''.FALSE.'', the ladder diagrams (i.e. the exchange terms related to <math>W</math> or the screened exchange) are not included.		{{TAG\|LADDER}} is used together with {{TAG\|LHARTREE}}. If {{TAG\|LADDER}}=''.FALSE.'', the ladder diagrams (i.e. the exchange terms related to <math>W</math> or the screened exchange) are not included.
	If {{TAG\|~~HARTREE~~}}=''.FALSE.'', the Hartree diagrams or bubble diagrams are not included. The following table summarizes all possible combinations:		If {{TAG\|LHARTREE}}=''.FALSE.'', the Hartree diagrams or bubble diagrams are not included. The following table summarizes all possible combinations:

	::{\| cellpadding="5" cellspacing="0" border="1"		::{\| cellpadding="5" cellspacing="0" border="1"

← Older revision		Revision as of 12:55, 30 January 2018
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	{{TAG\|LADDER}} is used together with {{TAG\|LHARTREE}}. If {{TAG\|LADDER}}=''.FALSE.'', the ladder diagrams (i.e. the exchange terms related to <math>W</math> or the screened exchange) are not included.		{{TAG\|LADDER}} is used together with {{TAG\|LHARTREE}}. If {{TAG\|LADDER}}=''.FALSE.'', the ladder diagrams (i.e. the exchange terms related to <math>W</math> or the screened exchange) are not included.
	If {{TAG\|~~HARTREE~~}}=''.FALSE.'', the Hartree diagrams or bubble diagrams are not included. The following table summarizes all possible combinations:		If {{TAG\|LHARTREE}}=''.FALSE.'', the Hartree diagrams or bubble diagrams are not included. The following table summarizes all possible combinations:

	::{\| cellpadding="5" cellspacing="0" border="1"		::{\| cellpadding="5" cellspacing="0" border="1"

← Older revision		Revision as of 14:25, 8 April 2022
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	----		----

	[[Category:INCAR]][[Category:Many-body perturbation theory]][[Category:Bethe-Salpeter equations]]		[[Category:INCAR tag]][[Category:Many-body perturbation theory]][[Category:Bethe-Salpeter equations]]