| MSC 1991 | Number of Preprints | |
| 81-XX | Quantum Theory
| 12 | browse |
| 81-00 | General reference works (handbooks, dictionaries, bibliographies, etc.)
| 12 | browse |
| 81-01 | Instructional exposition (textbooks, tutorial papers, etc.)
| 12 | browse |
| 81-02 | Research exposition (monographs, survey articles)
| 12 | browse |
| 81-03 | Historical
| 12 | browse |
| 81-04 | Explicit machine computation and programs (not the theory of computation or programming)
| 12 | browse |
| 81-05 | Experimental papers
| 12 | browse |
| 81-06 | Proceedings, conferences, collections, etc.
| 12 | browse |
| 81-08 | Computational methods
| 12 | browse |
| 81Pxx | Axiomatics, foundations, philosophy
| 9 | browse |
| 81Qxx | General mathematical topics and methods in quantum theory
| 43 | browse |
| 81Rxx | Groups and algebras in quantum theory
| 53 | browse |
| 81Sxx | General quantum mechanics and problems of quantization
| 31 | browse |
| 81Txx | Quantum field theory; related classical field theories
| 157 | browse |
| 81Uxx | Scattering theory
| 14 | browse |
| 81Vxx | Applications to specific physical systems
| 36 | browse |