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arXiv 0802.2448quant-ph
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标准量子力学的时间算符箭头

An Arrow of Time Operator for Standard Quantum Mechanics

Y. Strauss, J. Silman, S. Machnes, L. P. Horwitz

摘要:

在标准量子力学的框架内,我们引入了一个表示时间方向的自伴算符。也就是说,作为时间的函数,它的期望值对于任何初始状态单调下降。这个算子可以定义为任何系统所支配的哈密尔顿一致退化,绝对连续和半有界的频谱。我们研究了一些运营商的属性,并说明他们的一个大的等价类散射问题。我们还讨论了以前的一些尝试,构建这样的运营商,并表明,在这种情况下开发的不去定理不适用于我们的建设。

英文摘要:

We introduce a self-adjoint operator that indicates the direction of time within the framework of standard quantum mechanics. That is, as a function of time its expectation value decreases monotonically for any initial state. This operator can be defined for any system governed by a Hamiltonian with a uniformly finitely degenerate, absolutely continuous and semibounded spectrum. We study some of the operator's properties and illustrate them for a large equivalence class of scattering problems. We also discuss some previous attempts to construct such an operator, and show that the no-go theorems developed in this context are not applicable to our construction.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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