Literaturnachweis - Detailanzeige
| Autor/inn/en | Blanes, S.; Casas, F.; Oteo, J. A.; Ros, J. |
|---|---|
| Titel | A Pedagogical Approach to the Magnus Expansion |
| Quelle | In: European Journal of Physics, 31 (2010) 4, S.907-918 (12 Seiten)
PDF als Volltext |
| Sprache | englisch |
| Dokumenttyp | gedruckt; online; Zeitschriftenaufsatz |
| ISSN | 0143-0807 |
| DOI | 10.1088/0143-0807/31/4/020 |
| Schlagwörter | Quantum Mechanics; Equations (Mathematics); Calculus; Science Instruction; Time; Theories; Advanced Courses |
| Abstract | Time-dependent perturbation theory as a tool to compute approximate solutions of the Schrodinger equation does not preserve unitarity. Here we present, in a simple way, how the "Magnus expansion" (also known as "exponential perturbation theory") provides such unitary approximate solutions. The purpose is to illustrate the importance and consequences of such a property. We suggest that the Magnus expansion may be introduced to students in advanced courses of quantum mechanics. (Contains 1 figure.) (As Provided). |
| Anmerkungen | Institute of Physics Publishing. The Public Ledger Building Suite 929, 150 South Independence Mall West, Philadelphia, PA 19106. Tel: 215-627-0880; Fax: 215-627-0879; e-mail: info@ioppubusa.com; Web site: http://www.iop.org/EJ/journal/EJP |
| Erfasst von | ERIC (Education Resources Information Center), Washington, DC |
| Update | 2017/4/10 |
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