Linearly Positive Histories: Probabilities for a Robust Family of Sequences of Quantum Events
- 8 May 1995
- journal article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 74 (19) , 3715-3719
- https://doi.org/10.1103/physrevlett.74.3715
Abstract
Nonnegative probabilities that obey the sum rules may be assigned to a much wider family of sets of histories than decohering histories. The resulting {\it linearly positive histories} avoid the highly restrictive decoherence conditions and yet give the same probabilities when those conditions apply. Thus linearly positive histories are a broad extension of decohering histories. Moreover, the resulting theory is manifestly time-reversal invariant.Keywords
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