کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1864026 1037698 2009 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Probability sum rules and consistent quantum histories
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک و نجوم (عمومی)
پیش نمایش صفحه اول مقاله
Probability sum rules and consistent quantum histories
چکیده انگلیسی

An example shows that weak decoherence is more restrictive than the minimal logical decoherence structure that allows probabilities to be used consistently for quantum histories. The probabilities in the sum rules that define minimal decoherence are all calculated by using a projection operator to describe each possibility for the state at each time. Weak decoherence requires more sum rules. They bring in additional variables, that require different measurements and a different way to calculate probabilities, and raise questions of operational meaning. The example shows that extending the linearly positive probability formula from weak to minimal decoherence gives probabilities that are different from those calculated in the usual way using the Born and von Neumann rules and a projection operator at each time.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters A - Volume 373, Issue 34, 17 August 2009, Pages 3016–3020
نویسندگان
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