Perturbation theory (quantum mechanics)

Perturbation theory - quantum mechanics. Article "Perturbation theory (quantum mechanics)" in English Wikipedia has 42.8 points for quality (as of July 1, 2025). The article contains 18 references and 20 sections. The article also contains quality flaw template, which reduce quality score.

In this language version of Wikipedia the article has the best quality. Also, this article is the most popular in that language version.

Since the creation of article "Perturbation theory (quantum mechanics)", its content was written by 151 registered users of English Wikipedia and edited by 489 registered Wikipedia users in all languages.

The article is cited 301 times in English Wikipedia and cited 1126 times in all languages.

The highest Authors Interest rank from 2001:

• Local (English): #6775 in August 2003
• Global: #14032 in August 2003

The highest popularity rank from 2008:

• Local (English): #60647 in April 2018
• Global: #87201 in February 2012

There are 18 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.

#	Language	Quality grade	Quality score
1	English (en) Perturbation theory (quantum mechanics)		42.7931
2	Norwegian (no) Kvantemekanisk perturbasjonsteori		36.3364
3	German (de) Störungstheorie (Quantenmechanik)		26.5076
4	Hebrew (he) תורת ההפרעות (מכניקת הקוונטים)		23.3958
5	Chinese (zh) 微擾理論 (量子力學)		22.8774
6	French (fr) Théorie de la perturbation (mécanique quantique)		22.0464
7	Swedish (sv) Störningsteori		20.1245
8	Catalan (ca) Teoria de la pertorbació (mecànica quàntica)		17.1412
9	Vietnamese (vi) Lý thuyết nhiễu loạn (cơ học lượng tử)		16.9635
10	Italian (it) Teoria perturbativa (meccanica quantistica)		16.4118

More...

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

The most popular language versions of the article "Perturbation theory (quantum mechanics)" in all the time

#	Language	Popularity award	Relative popularity
1	English (en) Perturbation theory (quantum mechanics)		2 056 168
2	German (de) Störungstheorie (Quantenmechanik)		245 708
3	Italian (it) Teoria perturbativa (meccanica quantistica)		132 382
4	French (fr) Théorie de la perturbation (mécanique quantique)		131 723
5	Chinese (zh) 微擾理論 (量子力學)		118 810
6	Russian (ru) Стационарная теория возмущений в квантовой механике		46 823
7	Korean (ko) 섭동 이론 (양자역학)		38 801
8	Portuguese (pt) Teoria de perturbações		35 575
9	Hebrew (he) תורת ההפרעות (מכניקת הקוונטים)		28 771
10	Persian (fa) نظریه اختلال در مکانیک کوانتومی		22 333

More...

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

The most popular language versions of the article "Perturbation theory (quantum mechanics)" in June 2025

#	Language	Popularity award	Relative popularity
1	English (en) Perturbation theory (quantum mechanics)		9 230
2	German (de) Störungstheorie (Quantenmechanik)		1 018
3	Chinese (zh) 微擾理論 (量子力學)		482
4	Italian (it) Teoria perturbativa (meccanica quantistica)		398
5	French (fr) Théorie de la perturbation (mécanique quantique)		353
6	Russian (ru) Стационарная теория возмущений в квантовой механике		197
7	Portuguese (pt) Teoria de perturbações		117
8	Korean (ko) 섭동 이론 (양자역학)		115
9	Hebrew (he) תורת ההפרעות (מכניקת הקוונטים)		80
10	Persian (fa) نظریه اختلال در مکانیک کوانتومی		58

More...

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

Language versions of the article "Perturbation theory (quantum mechanics)" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.

#	Language	AI award	Relative AI
1	English (en) Perturbation theory (quantum mechanics)		151
2	German (de) Störungstheorie (Quantenmechanik)		87
3	Italian (it) Teoria perturbativa (meccanica quantistica)		65
4	French (fr) Théorie de la perturbation (mécanique quantique)		41
5	Persian (fa) نظریه اختلال در مکانیک کوانتومی		33
6	Hebrew (he) תורת ההפרעות (מכניקת הקוונטים)		27
7	Swedish (sv) Störningsteori		18
8	Russian (ru) Стационарная теория возмущений в квантовой механике		15
9	Portuguese (pt) Teoria de perturbações		13
10	Korean (ko) 섭동 이론 (양자역학)		10

More...

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

Language versions of the article "Perturbation theory (quantum mechanics)" with the highest AI in June 2025

#	Language	AI award	Relative AI
1	French (fr) Théorie de la perturbation (mécanique quantique)		1
2	Arabic (ar) نظرية الاضطراب (ميكانيكا الكم)		0
3	Catalan (ca) Teoria de la pertorbació (mecànica quàntica)		0
4	German (de) Störungstheorie (Quantenmechanik)		0
5	Greek (el) Θεωρία διαταραχών (κβαντική μηχανική)		0
6	English (en) Perturbation theory (quantum mechanics)		0
7	Persian (fa) نظریه اختلال در مکانیک کوانتومی		0
8	Hebrew (he) תורת ההפרעות (מכניקת הקוונטים)		0
9	Italian (it) Teoria perturbativa (meccanica quantistica)		0
10	Korean (ko) 섭동 이론 (양자역학)		0

More...

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

Language versions of the article "Perturbation theory (quantum mechanics)" with the highest Citation Index (CI)

#	Language	CI award	Relative CI
1	English (en) Perturbation theory (quantum mechanics)		301
2	Chinese (zh) 微擾理論 (量子力學)		178
3	Italian (it) Teoria perturbativa (meccanica quantistica)		98
4	Arabic (ar) نظرية الاضطراب (ميكانيكا الكم)		88
5	Korean (ko) 섭동 이론 (양자역학)		84
6	Portuguese (pt) Teoria de perturbações		69
7	French (fr) Théorie de la perturbation (mécanique quantique)		54
8	Catalan (ca) Teoria de la pertorbació (mecànica quàntica)		52
9	German (de) Störungstheorie (Quantenmechanik)		48
10	Swedish (sv) Störningsteori		41

More...

#	Language	Value
ar	Arabic نظرية الاضطراب (ميكانيكا الكم)
ca	Catalan Teoria de la pertorbació (mecànica quàntica)
de	German Störungstheorie (Quantenmechanik)
el	Greek Θεωρία διαταραχών (κβαντική μηχανική)
en	English Perturbation theory (quantum mechanics)
fa	Persian نظریه اختلال در مکانیک کوانتومی
fr	French Théorie de la perturbation (mécanique quantique)
he	Hebrew תורת ההפרעות (מכניקת הקוונטים)
it	Italian Teoria perturbativa (meccanica quantistica)
ko	Korean 섭동 이론 (양자역학)
ms	Malay Teori usikan (mekanik kuantum)
no	Norwegian Kvantemekanisk perturbasjonsteori
pt	Portuguese Teoria de perturbações
ru	Russian Стационарная теория возмущений в квантовой механике
sv	Swedish Störningsteori
uk	Ukrainian Стаціонарна теорія збурень в квантовій механіці
vi	Vietnamese Lý thuyết nhiễu loạn (cơ học lượng tử)
zh	Chinese 微擾理論 (量子力學)

Best Rank

English: #60647 04.2018

Global: #87201 02.2012

Best Rank

English: #6775 08.2003

Global: #14032 08.2003

On 12 August 2025 in multilingual Wikipedia, Internet users most often read articles on the following topics: Cristiano Ronaldo, Wednesday, Georgina Rodríguez, ChatGPT, Weapons, Jenna Ortega, deaths in 2025, Taylor Swift, Miguel Uribe Turbay, 2025–26 UEFA Champions League.

In English Wikipedia the most popular articles on that day were: Weapons (2025 film), Danielle Spencer (American actress), Cristiano Ronaldo, Deaths in 2025, Taylor Swift, Wednesday (TV series), Superman (2025 film), Georgina Rodríguez, Coolie (2025 film), The Fantastic Four: First Steps.

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