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arXiv quant-ph/0301155quant-phgr-qchep-phhep-thnucl-th
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量子概率的概念与洛伦兹协变性一致吗?

Is the concept of quantum probability consistent with Lorentz covariance?

Y. S. Kim, Marilyn E. Noz

摘要:

从费曼、基斯林格和拉文达尔的洛伦兹不变振子微分方程出发,构造了两体束缚态的洛伦兹协变谐振子波函数.波函数不是不变的,而是协变的。由于微分方程包含时间分离变量,因此波函数包含相同的时间分离变量,而这在薛定谔波函数中不存在。这个时间分离变量可以被证明属于费曼宇宙的其余部分,因此可以从密度矩阵中消除。给出了协变概率的解释。这种振子形式主义解释了费曼的退相干机制,这是在费曼的部分子图片。

英文摘要:

Lorentz-covariant harmonic oscillator wave functions are constructed from the Lorentz-invariant oscillator differential equation of Feynman, Kislinger, and Ravndal for a two-body bound state. The wave functions are not invariant but covariant. As the differential equation contains the time-separation variable, the wave functions contain the same time-separation variable which does not exist in Schrödinger wave functions. This time-separation variable can be shown to belong to Feynman's rest of the universe, and can thus be eliminated from the density matrix. The covariant probability interpretation is given. This oscillator formalism explains Feynman's decoherence mechanism which is exhibited in Feynman's parton picture.

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