arXiv quant-ph/02050242002-05-06quant-ph

量子测量问题、退相干和量子系统的自描述

Quantum Measurement Problem, Decoherence, and Quantum Systems Selfdescription

S. Mayburov

备注：: Latex, 14 pages, Talk given at 'Quantum Structures' Conference, Cesena, 2001, to appear in proceedings

摘要：

在系统自描述框架中，测量系统（MS）的量子测量由被测状态S、环境E和观测器$O$处理输入S信号组成。把$O$看作与S、E相互作用服从薛定谔方程（SE）的量子物体，并从SE和Breuer自描述形式化的S信息中重构出$O$。特别地，如果$O$自描述态具有对偶结构$L_T=\cal H \bigotimes L_V$，其中$\cal H$是MS态$Ψ_{MS}$的Hilbert空间，则得到S态坍缩. $\cal L_V$是具有元素$V^O=|O_j> < O_j|$的集合，该元素描述了由$O$在单个事件中观察到的随机“指针”结果$O_j$。由$O$定义的“优选的”基础$|O_j>$通过$O$ - E相互作用状态去相干。在自我测量框架中讨论Zurek的潜在解释。

英文摘要：

Quantum Measurements regarded in Systems Selfdescription framework for measuring system (MS) consist of measured state S environment E and observer $O$ processing input S signal. $O$ regarded as quantum object which interaction with S,E obeys to Schrodinger equation (SE) and from it and Breuer selfdescription formalism S information for $O$ reconstructed. In particular S state collapse obtained if $O$ selfdescription state has the dual structure $L_T=\cal H \bigotimes L_V$ where $\cal H$ is Hilbert space of MS states $Ψ_{MS}$. $\cal L_V$ is the set with elements $V^O=|O_j> < O_j|$ describing random 'pointer' outcomes $O_j$ observed by $O$ in the individual events. The 'preferred' basis $|O_j>$ defined by $O$ state decoherence via $O$ - E interactions. Zurek's Existential Interpretation discussed in selfmeasurement framework.

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摘要：

英文摘要：

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