{ "id": "quant-ph/9902025", "version": "v1", "published": "1999-02-08T00:34:14.000Z", "updated": "1999-02-08T00:34:14.000Z", "title": "Experimental evidence for the role of cantori as barriers in a quantum system", "authors": [ "K. M. D. Vant", "G. H. Ball", "H. Ammann", "N. L. Christensen" ], "comment": "19 pages including 9 figures, Accepted for publication in Physical Review E in March 1999", "journal": "Phys.Rev. E59 (1999) 2846-2852", "doi": "10.1103/PhysRevE.59.2846", "categories": [ "quant-ph" ], "abstract": "We investigate the effect of cantori on momentum diffusion in a quantum system. Ultracold caesium atoms are subjected to a specifically designed periodically pulsed standing wave. A cantorus separates two chaotic regions of the classical phase space. Diffusion through the cantorus is classically predicted. Quantum diffusion is only significant when the classical phase-space area escaping through the cantorus per period greatly exceeds Planck's constant. Experimental data and a quantum analysis confirm that the cantori act as barriers.", "revisions": [ { "version": "v1", "updated": "1999-02-08T00:34:14.000Z" } ], "analyses": { "keywords": [ "quantum system", "experimental evidence", "periodically pulsed standing wave", "period greatly exceeds plancks constant", "designed periodically pulsed standing" ], "tags": [ "journal article" ], "publication": { "publisher": "APS", "journal": "Phys. Rev. E" }, "note": { "typesetting": "TeX", "pages": 19, "language": "en", "license": "arXiv", "status": "editable", "inspire": 495054 } } }