Keldysh formalism

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Keldysh formalism

Quality:

Keldysh formalism - general framework for describing the quantum mechanical evolution of a system in a non-equilibrium state. Article “Keldysh formalism” in English Wikipedia has 20.5 points for quality (as of July 1, 2025). The article contains 6 references and 6 sections. The article also contains templates indicating quality issues, therefore its score was reduced by 1.08 points.

This article has the best quality in French Wikipedia. However, this article is the most popular in English version.

In June 2025 the article “Keldysh formalism” was edited by 3 authors in English Wikipedia and written by 3 authors in all languages.

Since the creation of article “Keldysh formalism”, its content was written by 32 registered users of English Wikipedia and edited by 64 registered Wikipedia users in all languages.

The article is cited 16 times in English Wikipedia and cited 26 times in all languages.

The highest Authors Interest rank from 2001:

  • Local (English): #34061 in June 2018
  • Global: #104706 in January 2022

The highest popularity rank from 2008:

  • Local (English): #677774 in June 2025
  • Global: #997933 in June 2025

There are 6 language versions for this article in the WikiRank database (of the considered 55 Wikipedia language editions).

The quality and popularity assessment was based on Wikipédia dumps from July 1, 2025 (including revision history and pageviews for previous years).

The table below shows the language versions of the article with the highest quality.

Languages with the highest quality

#LanguageQuality gradeQuality score
1French (fr)
Formalisme de Keldysh
23.5518
2English (en)
Keldysh formalism
20.4909
3Russian (ru)
Формализм Швингера — Келдыша
3.3326
4Turkish (tr)
Keldysh biçimciliği
3.2858
5Italian (it)
Formalismo di Keldysh
2.2879
6Japanese (ja)
ケルディッシュ形式
0.9201
More...

The following table shows the most popular language versions of the article.

Most popular in all the time

The most popular language versions of the article "Keldysh formalism" in all the time
#LanguagePopularity awardRelative popularity
1English (en)
Keldysh formalism
124 619
2Russian (ru)
Формализм Швингера — Келдыша
8 381
3Japanese (ja)
ケルディッシュ形式
6 765
4Italian (it)
Formalismo di Keldysh
4 765
5Turkish (tr)
Keldysh biçimciliği
2 135
6French (fr)
Formalisme de Keldysh
1 252
More...

The following table shows the language versions of the article with the highest popularity in the last month.

Most popular in June 2025

The most popular language versions of the article "Keldysh formalism" in June 2025
#LanguagePopularity awardRelative popularity
1English (en)
Keldysh formalism
1 314
2Japanese (ja)
ケルディッシュ形式
68
3Russian (ru)
Формализм Швингера — Келдыша
48
4French (fr)
Formalisme de Keldysh
31
5Italian (it)
Formalismo di Keldysh
16
6Turkish (tr)
Keldysh biçimciliği
5
More...

The following table shows the language versions of the article with the highest Authors’ Interest.

The highest AI

Language versions of the article "Keldysh formalism" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.
#LanguageAI awardRelative AI
1English (en)
Keldysh formalism
32
2Italian (it)
Formalismo di Keldysh
9
3French (fr)
Formalisme de Keldysh
7
4Turkish (tr)
Keldysh biçimciliği
7
5Russian (ru)
Формализм Швингера — Келдыша
6
6Japanese (ja)
ケルディッシュ形式
3
More...

The following table shows the language versions of the article with the highest Authors’ Interest in the last month.

The highest AI in June 2025

Language versions of the article "Keldysh formalism" with the highest AI in June 2025
#LanguageAI awardRelative AI
1English (en)
Keldysh formalism
3
2French (fr)
Formalisme de Keldysh
0
3Italian (it)
Formalismo di Keldysh
0
4Japanese (ja)
ケルディッシュ形式
0
5Russian (ru)
Формализм Швингера — Келдыша
0
6Turkish (tr)
Keldysh biçimciliği
0
More...

The following table shows the language versions of the article with the highest number of citations.

The highest CI

Language versions of the article "Keldysh formalism" with the highest Citation Index (CI)
#LanguageCI awardRelative CI
1English (en)
Keldysh formalism
16
2Japanese (ja)
ケルディッシュ形式
3
3Russian (ru)
Формализм Швингера — Келдыша
3
4Italian (it)
Formalismo di Keldysh
2
5French (fr)
Formalisme de Keldysh
1
6Turkish (tr)
Keldysh biçimciliği
1
More...

Scores

Estimated value for Wikipedia:
English:
Global:
Popularity in June 2025:
English:
Global:
Popularity in all years:
English:
Global:
Authors in June 2025:
English:
Global:
Registered authors in all years:
English:
Global:
Citations:
English:
Global:

Quality measures

Interwikis

#LanguageValue
enEnglish
Keldysh formalism
frFrench
Formalisme de Keldysh
itItalian
Formalismo di Keldysh
jaJapanese
ケルディッシュ形式
ruRussian
Формализм Швингера — Келдыша
trTurkish
Keldysh biçimciliği

Popularity rank trends

Best Rank English:
#677774
06.2025
Global:
#997933
06.2025

AI rank trends

Best Rank English:
#34061
06.2018
Global:
#104706
01.2022

Languages comparison

Important global interconnections (July 2024 – June 2025)

Wikipedia readers most often find their way to information on Keldysh formalism from Wikipedia articles about Greens function, Julian Schwinger, Thermal quantum field theory, Replica trick and Leonid Keldysh. Whereas reading the article about Keldysh formalism people most often go to Wikipedia articles on Leonid Keldysh, Matsubara frequency, Kondo effect, Julian Schwinger and Spin Hall effect.

Cumulative results of quality and popularity of the Wikipedia article

List of Wikipedia articles in different languages (starting with the most popular):

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About WikiRank

The WikiRank project is intended for automatic relative evaluation of the articles in the various language versions of Wikipedia. At the moment the service allows to compare over 44 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2025. When calculating current popularity and AI of articles data from June 2025 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2025... More information