Journal profile · Physics, Multidisciplinary
International Journal of Theoretical Physics
ISSN 0020-7748 · eISSN 1572-9575 · Springer US · UNITED STATES · Monthly · Founded 1968
International Journal of Theoretical Physics: CAS Zone 4 · Physics & Astronomy (2025 upgraded edition); impact factor 2.26; hybrid open access; APC about USD 3,190; review about 3 months (community reports); community-reported acceptance: easy; 331 articles in 2025; indexed in SCIE and Scopus.
Scope
Aims, scope and focus
International Journal of Theoretical Physics is published by Springer US and is in Zone 4 of Physics & Astronomy in the CAS Journal Ranking (2025 upgraded edition). By OpenAlex counts of its recent articles, its largest topics are Quantum Mechanics and Applications, Quantum Information and Cryptography and Cosmology and Gravitation Theories, together about 38.4% of its articles. Its main subfields are Atomic and Molecular Physics, and Optics. (generated from OpenAlex topic counts and CAS ranking data)
International Journal of Theoretical Physics publishes original research and reviews in theoretical physics and neighboring fields. Dedicated to the unification of the latest physics research, this journal seeks to map the direction of future research by original work in traditional physics like general relativity, quantum theory with relativistic quantum field theory,as used in particle physics, and by fresh inquiry into quantum measurement theory, and other similarly fundamental areas, e.g. quantum geometry and quantum logic, etc.
Source: LetPub
Research area (LetPub): Physics, Multidisciplinary
Main research topics OpenAlex counts of recent articles; shares are approximate
- Quantum Mechanics and ApplicationsPhysics and Astronomy14.4%
- Quantum Information and CryptographyComputer Science13.9%
- Cosmology and Gravitation TheoriesPhysics and Astronomy10.1%
- Black Holes and Theoretical PhysicsPhysics and Astronomy9.3%
- Quantum Computing Algorithms and ArchitectureComputer Science9.2%
- Noncommutative and Quantum Gravity TheoriesPhysics and Astronomy4.8%
- Relativity and Gravitational TheoryPhysics and Astronomy3.8%
- Nonlinear Waves and SolitonsPhysics and Astronomy2.7%
Rankings & indexing
CAS ranking and database indexing
CAS Journal Ranking
CAS Journal Ranking, upgraded edition (March 2025)Physics & Astronomy Zone 4
| Level | Category | Zone |
|---|---|---|
| Major | Physics & Astronomy | Zone 4 |
| Minor | Physics, Multidisciplinary | Zone 4 |
Top journal: noReview journal: no
CAS Xinrui Journal Ranking (March 2026)Physics & Astronomy Zone 3
| Level | Category | Zone |
|---|---|---|
| Major | Physics & Astronomy | Zone 3 |
| Minor | Physics, Multidisciplinary | Zone 3 |
Top journal: noReview journal: not marked
CAS Journal Ranking, previous upgraded edition (December 2023)Physics & Astronomy Zone 4
| Level | Category | Zone |
|---|---|---|
| Major | Physics & Astronomy | Zone 4 |
| Minor | Physics, Multidisciplinary | 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
- 2.26LetPub ·
- CiteScore 2026-06
- 3.1LetPub ·
- SJR 2026-06
- 0.34LetPub ·
- SNIP 2026-06
- 0.66LetPub ·
- h-index
- 54LetPub ·
- h-index
- 99OpenAlex ·
- i10-index
- 3,096OpenAlex ·
- 2-year mean citedness
- 2.78OpenAlex ·
- Self-citation rate
- 8.7%LetPub ·
- Share of gold OA articles
- 7.92%LetPub ·
Volume
- Articles per year
- 329LetPub ·
Articles by year OpenAlex count · 12,008 in total · the current year is incomplete
| Year | Articles | Open access | Citations |
|---|---|---|---|
| 2026 | 290 | 73 | 96 |
| 2025 | 331 | 65 | 921 |
| 2024 | 326 | 69 | 1,620 |
| 2023 | 264 | 70 | 1,571 |
| 2022 | 284 | 57 | 1,504 |
| 2021 | 302 | 50 | 1,869 |
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
Review time from article dates manuscript dates registered with PubMed · to
Too few articlesOnly 1 articles from the last 24 months carry both submission and acceptance dates, too few for a median
Only articles that were accepted and published are counted, not the time spent on rejected manuscripts, so this usually runs longer than a publisher's "time to first decision".
Other sources
- Average review time (community reports)
- about 3 monthsLetPub ·
- Average acceptance (community reports)
- EasyLetPub ·
- Peer review
- Double anonymous peer reviewPublisher website
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
Hybrid open accessLetPub
A subscription journal in which authors can pay to publish their article open access.
| Source | APC | Fee waiver | License | Observed |
|---|---|---|---|---|
| OpenAlex | USD 3,190 / EUR 2,590 / GBP 2,290 | — | — |
A hybrid journal charges the APC only when the author chooses open access; publishing under the subscription model is usually free.
The journal's website is authoritative for fees; sources were observed at different times and each keeps its own value, without averaging.
Submission
Article types and submission policies (journal website)
What to prepare4 items from the author guidelines
- Abstract
- 150–250 words
- Keywords
- ≥ 4
- Reference style
- Numbered, in order of citation
- Suggested reviewers
- Optional
Policy excerpts from the journal's websiteAI use, Authorship, Conflicts of interest, Data availability, Publication ethics, License & copyright, Open access
- AI use Generative AI Images
Please check Springer’s policy on generative AI images and make sure your work adheres to the principles described therein. Back to top
Source ↗Publisher website ·- Authorship Authorship principles
These guidelines describe authorship principles and good authorship practices to which prospective authors should adhere to. Authorship clarified The Journal and Publisher assume all authors agreed with the content and that all gave explicit consent to submit and that they obtained consent from the responsible authorities at the institute/organization where the work has been carried out, before th…
Source ↗Publisher website ·- Conflicts of interest Disclosures and declarations
All authors are requested to include information regarding sources of funding, financial or non-financial interests, study-specific approval by the appropriate ethics committee for research involving humans and/or animals, informed consent if the research involved human participants, and a statement on welfare of animals if the research involved animals (as appropriate). The decision whether such …
Source ↗Publisher website ·- Data availability Data availability statements
All original research must include a data availability statement. This statement should explain how to access data supporting the results and analysis in the article, including links/citations to publicly archived datasets analysed or generated during the study. Please see our full policy here. If it is not possible to share research data publicly, for instance when individual privacy could be com…
Source ↗Publisher website ·- Publication ethics Compliance with Ethical Standards
To ensure objectivity and transparency in research and to ensure that accepted principles of ethical and professional conduct have been followed, authors should include information regarding sources of funding, potential conflicts of interest (financial or non-financial), informed consent if the research involved human participants, and a statement on welfare of animals if the research involved an…
Source ↗Publisher website ·- License & copyright Copyright
Open Choice articles do not require transfer of copyright as the copyright remains with the author. In opting for open access, the author(s) agree to publish the article under a Creative Commons license. Details of the OA licences offered to authors can be found on the individual journal website, in the journal's How to publish with us guide. Back to top
Source ↗Publisher website ·- Open access Open access publishing
To find out more about publishing your work Open Access in International Journal of Theoretical Physics, including information on fees, funding and licences, visit our Open access publishing page. Back to top
Source ↗Publisher website ·
Excerpts are quoted from the journal's website; "model summary" lines are written by Workers AI and checked against the text. The journal's website is authoritative.
Profile
Publication details and official links
- Publisher
- Springer US
- Country or region
- UNITED STATES
- Language
- English
- Frequency
- Monthly
- Founded
- 1968
- ISSN
- 0020-7748
- Electronic ISSN
- 1572-9575
- Official links
- Journal homepage ↗OpenAlex
- Submission system ↗LetPub
- Author guidelines ↗LetPub
- Special issues ↗Publisher website
FAQ
Frequently asked questions about International Journal of Theoretical Physics
What CAS zone is International Journal of Theoretical Physics in?
In the 2025 upgraded edition of the CAS Journal Ranking, International Journal of Theoretical Physics is in Zone 4 of Physics & Astronomy, and in Zone 4 of the minor category Physics, Multidisciplinary. In the 2026 Xinrui edition it is in Zone 3 of Physics & Astronomy. Zones from different editions, and from major and minor categories, are not interchangeable.
What is the impact factor of International Journal of Theoretical Physics?
The latest impact factor listed by LetPub is 2.26; CiteScore 3.1, h-index 99.
How long does peer review take at International Journal of Theoretical Physics?
Authors report an average review time of about 3 months; 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.
What are the manuscript requirements of International Journal of Theoretical Physics?
According to the journal's author guidelines: Abstract: 150–250 words; Keywords: ≥ 4; Reference style: Numbered, in order of citation; Suggested reviewers: Optional. A model extracted these from the author guidelines and each was checked against the text; check the latest version on the journal's website before submitting.
Which databases index International Journal of Theoretical Physics?
According to LetPub and DOAJ records, International Journal of Theoretical Physics is indexed in SCIE and Scopus.
Is International Journal of Theoretical Physics open access, and what is the APC?
International Journal of Theoretical Physics is a hybrid journal. For open-access publication: APC about USD 3,190.
Sources and updates
The facts on this page come from LetPub, OpenAlex, Publisher website; 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: .