{ "id": "1502.06143", "version": "v1", "published": "2015-02-21T21:13:19.000Z", "updated": "2015-02-21T21:13:19.000Z", "title": "On the Mean-Field and Classical Limits of Quantum Mechanics", "authors": [ "François Golse", "Clément Mouhot", "Thierry Paul" ], "comment": "36 pages", "categories": [ "math.AP", "math-ph", "math.MP" ], "abstract": "The main result in this paper is a new inequality bearing on solutions of the $N$-body linear Schr\\\"{o}dinger equation and of the mean field Hartree equation. This inequality implies that the mean field limit of the quantum mechanics of $N$ identical particles is uniform in the classical limit and provides a quantitative estimate of the quality of the approximation. This result applies to the case of $C^{1,1}$ interaction potentials. The quantity measuring the approximation of the $N$-body quantum dynamics by its mean field limit is analogous to the Monge-Kantorovich (or Wasserstein) distance with exponent $2$. The inequality satisfied by this quantity is reminiscent of the work of Dobrushin on the mean field limit in classical mechanics [Func. Anal. Appl. 13 (1979), 115-123]. Our approach of this problem is based on a direct analysis of the $N$-particle Liouville equation, and avoids using techniques based on the BBGKY hierarchy or on second quantization.", "revisions": [ { "version": "v1", "updated": "2015-02-21T21:13:19.000Z" } ], "analyses": { "subjects": [ "82C10", "35Q55", "82C05", "35Q83" ], "keywords": [ "quantum mechanics", "mean field limit", "classical limit", "mean-field", "mean field hartree equation" ], "publication": { "doi": "10.1007/s00220-015-2485-7", "journal": "Communications in Mathematical Physics", "year": 2016, "month": "Apr", "volume": 343, "number": 1, "pages": 165 }, "note": { "typesetting": "TeX", "pages": 36, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2016CMaPh.343..165G" } } }