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Quantum dephasing by chaos

By Hiromichi Nakazato, Mikio Namiki, Saverio Pascazio and Yoshiya Yamanaka

Abstract

We examine whether the chaotic behavior of classical systems with a limited number of degrees of freedom can produce quantum dephasing, against the conventional idea that dephasing takes place only in large systems with a huge number of constituents and complicated internal interactions. On the basis of this analysis, we briefly discuss the possibility of defining quantum chaos and of inventing a “chaos detector”. Key words: dephasing, chaos, quantum measurement. 1 Quantum dephasing is a central issue in quantum measurements. Many physicists used to think that quantum dephasing takes place as a result of the interaction with large systems endowed with a huge number of elementary constituents and complicated internal interactions. Usually, some randomness associated with large systems is considered to play an important role in this context. See discussions on this matter within the framework of th

Year: 1996
DOI identifier: 10.1016/0375-9601(96)00647-0
OAI identifier: oai:CiteSeerX.psu:10.1.1.251.3683
Provided by: CiteSeerX
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