Universality of decoherence

被引：131

作者：

Braun, D ^{[1
]}

Haake, F ^{[1
]}

Strunz, WT ^{[1
]}

机构：

[1] Univ Essen Gesamthsch, Fachbereich Phys, D-45117 Essen, Germany

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 86卷 / 14期

关键词：

D O I：

10.1103/PhysRevLett.86.2913

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We consider environment induced decoherence of quantum superpositions to mixtures in the limit in which that process is much faster than any competing one generated by the Hamiltonian H-sys of the isolated system. While the golden rule then does not apply we can discard H-sys. By allowing for couplings to different reservoirs, we reveal decoherence as a universal short-time phenomenon independent of the character of the system as well as the bath and of the basis the superimposed states are taken from. We discuss consequences for the classical behavior of the macroworld and quantum measurement: For decoherence of superpositions of macroscopically distinct states H-sys is always negligible.

引用

页码：2913 / 2917

页数：5

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