Weak Value, Quasiprobability and Bohmian Mechanics
详细信息 查看全文
- 作者：Kazuki Fukuda ; Jaeha Lee ; Izumi Tsutsui
- 关键词：Weak value ; Quasiprobability ; Bohmian mechanics ; Ontological models
- 刊名：Foundations of Physics
- 出版年：2017
- 出版时间：February 2017
- 年：2017
- 卷：47
- 期：2
- 页码：236-255
- 全文大小：
- 刊物类别：Physics and Astronomy
- 刊物主题：History and Philosophical Foundations of Physics; Quantum Physics; Classical and Quantum Gravitation, Relativity Theory; Statistical Physics and Dynamical Systems; Classical Mechanics; Philosophy of S
- 出版者：Springer US
- ISSN：1572-9516
- 卷排序：47
文摘
We clarify the significance of quasiprobability (QP) in quantum mechanics that is relevant in describing physical quantities associated with a transition process. Our basic quantity is Aharonov’s weak value, from which the QP can be defined up to a certain ambiguity parameterized by a complex number. Unlike the conventional probability, the QP allows us to treat two noncommuting observables consistently, and this is utilized to embed the QP in Bohmian mechanics such that its equivalence to quantum mechanics becomes more transparent. We also show that, with the help of the QP, Bohmian mechanics can be recognized as an ontological model with a certain type of contextuality.