{ "id": "1012.4544", "version": "v1", "published": "2010-12-21T04:34:00.000Z", "updated": "2010-12-21T04:34:00.000Z", "title": "Refraction in spacetime", "authors": [ "M. Jaaskelainen", "M. Lombard", "U. Zuelicke" ], "comment": "7 pages, 4 figures, RevTex4.1. This article has been conditionally accepted by the American Journal of Physics. After it is published, it will be found at http://scitation.aip.org/ajp/", "journal": "Am. J. Phys. 79, 672 (2011)", "doi": "10.1119/1.3553459", "categories": [ "quant-ph" ], "abstract": "Refraction, interference, and diffraction serve as distinguishing features for wave-like phenomena. While they are normally associated only with a purely spatial wave-propagation pattern, analogs to interference and diffraction involving the spatio-temporal dynamics of waves in one dimension (1D) have been pointed out. Here we complete the triplet of analogies by discussing how spatio-temporal analogs to refraction are exhibited by a quantum particle in 1D that is scattering off a step barrier. Similarly, birefringence in spacetime occurs for a spin-1/2 particle in a magnetic field. These examples serve to illustrate basics of quantum time evolution from a new perspective.", "revisions": [ { "version": "v1", "updated": "2010-12-21T04:34:00.000Z" } ], "analyses": { "subjects": [ "03.65.-w" ], "keywords": [ "refraction", "quantum time evolution", "diffraction serve", "purely spatial wave-propagation", "spatio-temporal dynamics" ], "tags": [ "journal article" ], "publication": { "journal": "American Journal of Physics", "year": 2011, "month": "Jun", "volume": 79, "number": 6, "pages": 672 }, "note": { "typesetting": "RevTeX", "pages": 7, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2011AmJPh..79..672J" } } }