Effectively classical quantum states for open systems

被引：11

作者：

Blanchard, P ^{[1
]}

Olkiewicz, R

机构：

[1] Univ Bielefeld, Fac Phys, D-33615 Bielefeld, Germany

[2] Univ Bielefeld, BiBoS, D-33615 Bielefeld, Germany

[3] Univ Wroclaw, Inst Theoret Phys, PL-50204 Wroclaw, Poland

来源：

PHYSICS LETTERS A | 2000年 / 273卷 / 04期

关键词：

D O I：

10.1016/S0375-9601(00)00507-7

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Notions of robust and 'classical' states for an open quantum system are introduced and discussed in the framework of the isometric-sweeping decomposition. Using the predictability sieve proposed by Zurek [Phys. Rev. D 24 (1981) 1516; 26 (1982) 1862], 'quasi-classical' states are defined. A number of examples illustrating how the 'quasi-classical' states correspond to classical points in phase space connected with the measuring apparatus are presented. (C) 2000 Published by Elsevier Science B.V.

引用

页码：223 / 231

页数：9

共 26 条

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