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Type: Artigo de periódico
Title: Rapid decoherence in integrable systems: A border effect
Author: Angelo, RM
Furuya, K
Nemes, MC
Pellegrino, GQ
Abstract: We show that rapid decoherence, usually associated with chaotic dynamics, is not necessarily a hallmark of nonintegrability: border effects in integrable systems may produce similarly drastic decoherence rates. These can be found when the subsystem under observation possesses an energy limitation as, e.g., in the N-atom Jaynes-Cummings model. We show for this model that special initial coherent wave packets exhibit entropy production rates strikingly similar to the chaotic case. Also, a (de)localization phenomenon is found to be a function of the proximity to the phase-space border. [S1063-651X(99)01611-6].
Country: EUA
Editor: American Physical Soc
Rights: aberto
Identifier DOI: 10.1103/PhysRevE.60.5407
Date Issue: 1999
Appears in Collections:Unicamp - Artigos e Outros Documentos

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