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arXiv quant-ph/0301172quant-ph
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Koopman-von Neumann理论

Topics in Koopman-von Neumann Theory

D. Mauro

摘要:

本文研究了三十年代Koopman和von Neumann(KvN)开创的经典力学的操作方法的几个特点。特别是在第一部分中,我们研究的KvN状态的阶段的作用。我们分析,在KvN理论,双缝实验和Aharonov-Bohm效应,我们做了比较的经典和量子的情况下。在论文的第二部分中,我们研究了KvN形式主义在形式空间和Jacobi域上的推广。我们首先表明,所有的标准Cartan演算辛空间可以通过格拉斯曼变量或通过适当的组合泡利矩阵。其次,我们研究了KvN的扩展Hilbert空间,它现在包括形式,并证明了它是不可能同时有一个正定的标量积和一个酉演化。明确的物理原因,这种现象的表现。最后,我们总结了一些工作进展的问题上的量化的论文。

英文摘要:

In this thesis we study several features of the operatorial approach to classical mechanics pionereed by Koopman and von Neumann (KvN) in the Thirties. In particular in the first part we study the role of the phases of the KvN states. We analyze, within the KvN theory, the two-slit experiment and the Aharonov-Bohm effect and we make a comparison between the classical and the quantum case. In the second part of the thesis we study the extension of the KvN formalism to the space of forms and Jacobi fields. We first show that all the standard Cartan calculus on symplectic spaces can be performed via Grassmann variables or via suitable combinations of Pauli matrices. Second we study the extended Hilbert space of KvN which now includes forms and prove that it is impossible to have at the same time a positive definite scalar product and a unitary evolution. Clear physical reasons for this phenomenon are exhibited. We conclude the thesis with some work in progress on the issue of quantization.

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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