LANCZOSTHR - Revision history

Pmelo at 12:42, 16 October 2025

2025-10-16T12:42:42Z

← Older revision		Revision as of 12:42, 16 October 2025
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			{{NB\|deprecated\|This feature is deprecated and will be removed in a future release. Please use {{TAG\|BSEPREC}} instead.}}

	{{TAGDEF\|LANCZOSTHR\|[real]\|<math>10^{-3}</math>}}		{{TAGDEF\|LANCZOSTHR\|[real]\|<math>10^{-3}</math>}}

Huebsch at 07:44, 16 October 2025

2025-10-16T07:44:14Z

← Older revision		Revision as of 07:44, 16 October 2025
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	Description: {{TAG\|LANCZOSTHR}} is used by the BSE Lanczos algorithm to stop the iterative procedure, once the dielectric function has reached numerical convergence.		Description: {{TAG\|LANCZOSTHR}} is used by the BSE Lanczos algorithm to stop the iterative procedure, once the dielectric function has reached numerical convergence.

			----

	The difference between the dielectric function at two consecutive iterations, <math>i</math> and <math>i+1</math>, is computed as root-mean-square over the frequency grid		The difference between the dielectric function at two consecutive iterations, <math>i</math> and <math>i+1</math>, is computed as root-mean-square over the frequency grid
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	</math>		</math>

	and once <math>\mathrm{RMS}[\epsilon]<=</math>LANCZOSTHR the iterative algorithm stops.		and once <math>\mathrm{RMS}[\epsilon]<=</math>{{TAG\|LANCZOSTHR}} the iterative algorithm stops.

	== Related tag and articles ==		== Related tag and articles ==

Pmelo at 15:25, 18 December 2024

2024-12-18T15:25:48Z

← Older revision		Revision as of 15:25, 18 December 2024
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	::<math>		::<math>
	\mathrm{RMS}[\epsilon] = \sqrt{\sum_{j=1}^N\left[\epsilon_{i}(\omega_j)-\epsilon_{i+1}(\omega_j)\right]^2}		\mathrm{RMS}[\epsilon] = \sqrt{\sum_{j=1}^N\frac{1}{N}\left[\epsilon_{i}(\omega_j)-\epsilon_{i+1}(\omega_j)\right]^2}
	</math>		</math>

Tal: Tal moved page Construction:LANCZOSTHR to LANCZOSTHR

2024-12-18T09:52:02Z

Tal moved page Construction:LANCZOSTHR to LANCZOSTHR

← Older revision	Revision as of 09:52, 18 December 2024
(No difference)

Pmelo at 12:37, 15 October 2024

2024-10-15T12:37:24Z

← Older revision		Revision as of 12:37, 15 October 2024
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	{TAGDEF\|LANCZOSTHR\|[real]}}		{{TAGDEF\|LANCZOSTHR\|[real]\|<math>10^{-3}</math>}}
	~~{{DEF\|LANCZOSTHR~~\| <math>10^{-3}</math> \| }}

	Description: {{TAG\|LANCZOSTHR}} is used by the BSE Lanczos algorithm to stop the iterative procedure, once the dielectric function has reached numerical convergence.		Description: {{TAG\|LANCZOSTHR}} is used by the BSE Lanczos algorithm to stop the iterative procedure, once the dielectric function has reached numerical convergence.

	The difference between the dielectric function at two consecutive iterations, <math>i</math> and <math>i+1</math> is computed as root-mean-square over the frequency grid ~~sampling~~		The difference between the dielectric function at two consecutive iterations, <math>i</math> and <math>i+1</math>, is computed as root-mean-square over the frequency grid

	::<math>		::<math>
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	</math>		</math>

	and once <math>\mathrm{RMS}[\epsilon]<=</math>LANCZOSTHR the iterative ~~procedure~~ stops.		and once <math>\mathrm{RMS}[\epsilon]<=</math>LANCZOSTHR the iterative algorithm stops.

	== Related tag and articles ==		== Related tag and articles ==

Pmelo at 10:06, 3 October 2024

2024-10-03T10:06:45Z

← Older revision		Revision as of 10:06, 3 October 2024
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	and once <math>\mathrm{RMS}[\epsilon]<=</math>LANCZOSTHR the iterative procedure stops.		and once <math>\mathrm{RMS}[\epsilon]<=</math>LANCZOSTHR the iterative procedure stops.

	~~----~~

	== Related tag and articles ==		== Related tag and articles ==
	{{TAG\|~~IBSE}},~~		{{TAG\|BSE}},
	~~{{TAG\|BSEPREC}},~~
	~~{{TAG\|NBANDSV}},~~
	~~{{TAG\|NBANDSO}},~~
	~~{{TAG\|CSHIFT}},~~
	~~{{TAG\|OMEGAMAX~~}},
	[[BSE calculations]],		[[BSE calculations]],
	[[Bethe-Salpeter equations]]		[[Bethe-Salpeter equations]]
			----
			[[Category:INCAR tag]][[Category:Bethe-Salpeter equations]][[Category:Many-body perturbation theory]]

Pmelo: Created page with "{TAGDEF|LANCZOSTHR|[real]}} {{DEF|LANCZOSTHR| $10^{-3}$ | }} Description: {{TAG|LANCZOSTHR}} is used by the BSE Lanczos algorithm to stop the iterative procedure, once the dielectric function has reached numerical convergence. The difference between the dielectric function at two consecutive iterations, $i$ and $i+1$ is computed as root-mean-square over the frequency grid sampling :: $\mathrm{RMS}[\epsilon] = \sqrt{\sum_{j=1}^N\le..."$

2024-10-02T14:24:56Z

Created page with "{TAGDEF|LANCZOSTHR|[real]}} {{DEF|LANCZOSTHR| <math>10^{-3}</math> | }} Description: {{TAG|LANCZOSTHR}} is used by the BSE Lanczos algorithm to stop the iterative procedure, once the dielectric function has reached numerical convergence. The difference between the dielectric function at two consecutive iterations, <math>i</math> and <math>i+1</math> is computed as root-mean-square over the frequency grid sampling ::<math> \mathrm{RMS}[\epsilon] = \sqrt{\sum_{j=1}^N\le..."

New page

{TAGDEF|LANCZOSTHR|[real]}}
{{DEF|LANCZOSTHR| <math>10^{-3}</math> | }}

Description: {{TAG|LANCZOSTHR}} is used by the BSE Lanczos algorithm to stop the iterative procedure, once the dielectric function has reached numerical convergence.

The difference between the dielectric function at two consecutive iterations, <math>i</math> and <math>i+1</math> is computed as root-mean-square over the frequency grid sampling

::<math>
\mathrm{RMS}[\epsilon] = \sqrt{\sum_{j=1}^N\left[\epsilon_{i}(\omega_j)-\epsilon_{i+1}(\omega_j)\right]^2}
</math>

and once <math>\mathrm{RMS}[\epsilon]<=</math>LANCZOSTHR the iterative procedure stops.

----

== Related tag and articles ==
{{TAG|IBSE}},
{{TAG|BSEPREC}},
{{TAG|NBANDSV}},
{{TAG|NBANDSO}},
{{TAG|CSHIFT}},
{{TAG|OMEGAMAX}},
[[BSE calculations]],
[[Bethe-Salpeter equations]]