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ERIC Number: EJ830495
Record Type: Journal
Publication Date: 2007-Jul
Pages: 6
Abstractor: As Provided
Reference Count: 5
ISBN: N/A
ISSN: ISSN-0143-0807
Evolution Time and Energy Uncertainty
Boykin, Timothy B.; Kharche, Neerav; Klimeck, Gerhard
European Journal of Physics, v28 n4 p673-678 Jul 2007
Often one needs to calculate the evolution time of a state under a Hamiltonian with no explicit time dependence when only numerical methods are available. In cases such as this, the usual application of Fermi's golden rule and first-order perturbation theory is inadequate as well as being computationally inconvenient. Instead, what one needs are conditions under which the evolution time may be obtained from the easily calculated energy uncertainty. This work derives some general conditions for obtaining the evolution time from the energy uncertainty.
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
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A