LOCALIZATION CONDITIONS FOR TWO-LEVEL SYSTEMS

Authors
CHENG H GE ML SHAO JS
Citation
H. Cheng et al., LOCALIZATION CONDITIONS FOR TWO-LEVEL SYSTEMS, Physics letters. A, 191(1-2), 1994, pp. 1-6
Citations number
19
Categorie Soggetti
Physics
Journal title
Physics letters. A → ACNP
ISSN journal
03759601
Volume
191
Issue
1-2
Year of publication
1994
Pages
1 - 6
Database
ISI
SICI code
0375-9601(1994)191:1-2<1:LCFTS>2.0.ZU;2-J
Abstract
The dynamics of two-level systems in an external periodic field are in vestigated in general. The necessary conditions of localization are ob tained by analysing the time-evolution matrix. It is found that locali zation is possible only if the dynamics of the system is periodic and its period is the same as that of the extemal potential. A model syste m in a periodic delta-function potential is studied thoroughly.