Relativistic quantum measurement
Relativistic quantum measurement
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相对论量子测量
DOI：
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
C. Rovelli
中科院分区：
文献类型：
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作者：
D. Marolf;C. Rovelli
量子系统的测量必然打破洛伦兹不变性吗？我们提出了一个简单的探测器模型，它以洛伦兹不变的方式测量相对论粒子的时空局部化。检测器不会像牛顿-维格纳测量那样选择优选的洛伦兹帧。结果表明，量子测量存在洛伦兹不变量概念，并揭示了相对论粒子的局域化问题。考虑的框架是单粒子力学的框架，而不是场论的框架。这一结果可以作为单粒子量子理论时空态表述的解释假设的支持。
Does the measurement of a quantum system necessarily break Lorentz invariance? We present a simple model of a detector that measures the spacetime localization of a relativistic particle in a Lorentz invariant manner. The detector does not select a preferred Lorentz frame as a Newton-Wigner measurement would do. The result indicates that there exists a Lorentz invariant notion of quantum measurement and sheds light on the issue of the localization of a relativistic particle. The framework considered is that of single-particle mechanics as opposed to field theory. The result may be taken as support for the interpretation postulate of the spacetime-states formulation of single-particle quantum theory.