Journal profile · Mathematics, Interdisciplinary Applications
Fluctuation and Noise Letters
ISSN 0219-4775 · eISSN 1793-6780 · World Scientific Publishing Co. Pte Ltd · SINGAPORE · Quarterly · Founded 2001
Fluctuation and Noise Letters: CAS Zone 4 · Engineering (2025 upgraded edition); impact factor 0.84; subscription journal; review over 12 weeks (community reports); community-reported acceptance: easy; 86 articles in 2025; indexed in SCIE and Scopus.
Scope
Aims, scope and focus
Fluctuation and Noise Letters is published by World Scientific Publishing Co. Pte Ltd and is in Zone 4 of Engineering in the CAS Journal Ranking (2025 upgraded edition). By OpenAlex counts of its recent articles, its largest topics are stochastic dynamics and bifurcation, Complex Systems and Time Series Analysis and Advanced Thermodynamics and Statistical Mechanics, together about 32.6% of its articles. Its main subfields are Statistical and Nonlinear Physics. (generated from OpenAlex topic counts and CAS ranking data)
Fluctuation and Noise Letters (FNL) is unique. It is the only specialist journal for fluctuations and noise, and it covers that topic throughout the whole of science in a completely interdisciplinary way. High standards of refereeing and editorial judgment are guaranteed by the selection of Editors from among the leading scientists of the field. FNL places equal emphasis on both fundamental and applied science and the name "Letters" is to indicate speed of publication, rather than a limitation on the lengths of papers. The journal uses on-line submission and provides for immediate on-line publication of accepted papers. FNL is interested in interdisciplinary articles on random fluctuations, quite generally. For example: noise enhanced phenomena including stochastic resonance; 1/f noise; shot noise; fluctuation-dissipation; cardiovascular dynamics; ion channels; single molecules; neural systems; quantum fluctuations; quantum computation; classical and quantum information; statistical physics; degradation and aging phenomena; percolation systems; fluctuations in social systems; traffic; the stock market; environment and climate; etc.
Source: LetPub
Research area (LetPub): Mathematics, Interdisciplinary Applications
Main research topics OpenAlex counts of recent articles; shares are approximate
- stochastic dynamics and bifurcationPhysics and Astronomy13.2%
- Complex Systems and Time Series AnalysisEconomics, Econometrics and Finance11.8%
- Advanced Thermodynamics and Statistical MechanicsPhysics and Astronomy7.6%
- Nonlinear Dynamics and Pattern FormationComputer Science6.4%
- Neural dynamics and brain functionNeuroscience4.8%
- Chaos control and synchronizationPhysics and Astronomy4.7%
- Quantum Mechanics and ApplicationsPhysics and Astronomy4.6%
- Advancements in Semiconductor Devices and Circuit DesignEngineering4.1%
Rankings & indexing
CAS ranking and database indexing
CAS Journal Ranking
CAS Journal Ranking, upgraded edition (March 2025)Engineering Zone 4
| Level | Category | Zone |
|---|---|---|
| Major | Engineering | Zone 4 |
| Minor | Mathematics, Interdisciplinary Applications | Zone 4 |
| Minor | Physics, Applied | Zone 4 |
Top journal: noReview journal: no
CAS Xinrui Journal Ranking (March 2026)Engineering Zone 4
| Level | Category | Zone |
|---|---|---|
| Major | Engineering | Zone 4 |
| Minor | Mathematics, Interdisciplinary Applications | Zone 4 |
| Minor | Physics, Applied | Zone 4 |
Top journal: noReview journal: not marked
CAS Journal Ranking, previous upgraded edition (December 2023)Engineering Zone 4
| Level | Category | Zone |
|---|---|---|
| Major | Engineering | Zone 4 |
| Minor | Mathematics, Interdisciplinary Applications | Zone 4 |
| Minor | Physics, Applied | Zone 4 |
Top journal: noReview journal: no
Database indexing
SCIEScopusLetPub
International journal early-warning lists: not listed in any editionLetPub
Editions, and major and minor categories, are shown separately and never merged into one zone; check which edition your institution uses before you submit or report.
Metrics
Impact metrics and publication volume
Impact
- Impact factor
- 0.84LetPub ·
- CiteScore 2026-06
- 2.1LetPub ·
- SJR 2026-06
- 0.23LetPub ·
- SNIP 2026-06
- 0.46LetPub ·
- h-index
- 24LetPub ·
- h-index
- 45OpenAlex ·
- i10-index
- 347OpenAlex ·
- 2-year mean citedness
- 1.08OpenAlex ·
- Self-citation rate
- 22.2%LetPub ·
- Share of gold OA articles
- 1.18%LetPub ·
Volume
- Articles per year
- 95LetPub ·
Articles by year OpenAlex count · 1,416 in total · the current year is incomplete
| Year | Articles | Open access | Citations |
|---|---|---|---|
| 2026 | 64 | 6 | 13 |
| 2025 | 86 | 12 | 88 |
| 2024 | 98 | 12 | 166 |
| 2023 | 99 | 5 | 279 |
| 2022 | 54 | 6 | 278 |
| 2021 | 53 | 7 | 401 |
Sources count differently and were observed at different times, so each source's own value is kept; "publisher" marks figures from the journal's website.
Review & acceptance
Review time and acceptance
- Average review time (community reports)
- over 12 weeksLetPub ·
- Average acceptance (community reports)
- EasyLetPub ·
Community reports come from authors' own submissions (confidence 0.5) and are not a promise from the journal; for publisher figures, the journal's own definitions apply.
Fees & open access
APC and open-access policy
Subscription journalLetPub
A subscription journal: articles are read by subscription or purchase, and authors usually pay no publication charge.
No source has fee information yet; check the journal's website.
The journal's website is authoritative for fees; sources were observed at different times and each keeps its own value, without averaging.
Profile
Publication details and official links
- Publisher
- World Scientific Publishing Co. Pte Ltd
- Country or region
- SINGAPORE
- Language
- English
- Frequency
- Quarterly
- Founded
- 2001
- ISSN
- 0219-4775
- Electronic ISSN
- 1793-6780
- Official links
- Journal homepage ↗OpenAlex
- Submission system ↗LetPub
FAQ
Frequently asked questions about Fluctuation and Noise Letters
What CAS zone is Fluctuation and Noise Letters in?
In the 2025 upgraded edition of the CAS Journal Ranking, Fluctuation and Noise Letters is in Zone 4 of Engineering, and in Zone 4 of the minor category Mathematics, Interdisciplinary Applications / Physics, Applied. In the 2026 Xinrui edition it is in Zone 4 of Engineering. Zones from different editions, and from major and minor categories, are not interchangeable.
What is the impact factor of Fluctuation and Noise Letters?
The latest impact factor listed by LetPub is 0.84; CiteScore 2.1, h-index 45.
How long does peer review take at Fluctuation and Noise Letters?
Authors report an average review time of over 12 weeks; the community-reported acceptance is “Easy”. Article statistics cover accepted papers only, publisher figures follow the journal's own definitions, and community reports come from authors' own submissions; none is a promise from the journal.
Which databases index Fluctuation and Noise Letters?
According to LetPub and DOAJ records, Fluctuation and Noise Letters is indexed in SCIE and Scopus.
Is Fluctuation and Noise Letters open access, and what is the APC?
Fluctuation and Noise Letters is a subscription journal. Fee information is not available yet; check the journal's website.
Sources and updates
The facts on this page come from LetPub, OpenAlex; every figure is tagged with its source and the date it was observed, and conflicting values are kept per source. LetPub source page: view ↗ (archived 2026-08-24). Last updated: .