Quantum Measurement Problem, Decoherence, and Quantum Systems Selfdescription

Details Quantum Measurement Problem, Decoherence, and Quantum Systems Selfdescription Quantum Measurement Problem, Decoherence, and Quantum Systems Selfdescription

2002-05-06

arxiv.org/abs/quant-ph/0205024v1

Physics

Quantum Physics

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

Scientific paper

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 $\Psi_{MS}$. $\cal L_V$ 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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