Relational Quantum Measurements, Information and State Collapse

Details Relational Quantum Measurements, Information and State Collapse Relational Quantum Measurements, Information and State Collapse

2000-06-22

arxiv.org/abs/quant-ph/0006104v1

Physics

Quantum Physics

16 pages, Latex, (Talk given on QCM&C conference, Capri, July 2000, to appear in proceedings)

Scientific paper

The quantum measurement problem considered for measuring system (MS) consist of measured state S (particle), detector D and information processing device (observer) O. It's shown that O states selfreference structure results in principal nonobservability of MS interference terms which discriminate pure and mixed S states. Such observables restriction permit to construct for MS states subjective representation (SR) which describes probabilistic evolution for measurement events observed by $O$ and his subjective information about S values. SR is dual and nonequivalent to MS Hilbert space $H$ for external observer $O'$. Due to it SR evolution is compatible with Schrodinger linear MS evolution observed by $O'$. It's argued that SR evolution corresponds to S state collapse for individual events observed by $O$.

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