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arXiv quant-ph/0407158quant-ph
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四元数量子力学中的另类描述

Alternative Descriptions in Quaternionic Quantum Mechanics

A. Blasi, G. Scolarici, L. Solombrino

摘要:

利用准反埃尔米特四元数算子的谱刻画了QQM中的准反埃尔米特四元数算子,并给出了在无限维(右)四元数Hilbert空间中,一组准反埃尔米特四元数算子关于唯一定义的正标积是反埃尔米特算子的一个充要条件.根据这些结果,我们得到了在四元数量子力学中量子光学物理系统的两种不同的描述,而在复量子力学中则不可能存在这种不同的描述,并讨论了它们之间的一些区别。

英文摘要:

We characterize the quasianti-Hermitian quaternionic operators in QQM by means of their spectra; moreover, we state a necessary and sufficient condition for a set of quasianti-Hermitian quaternionic operators to be anti-Hermitian with respect to a uniquely defined positive scalar product in a infinite dimensional (right) quaternionic Hilbert space. According to such results we obtain two alternative descriptions of a quantum optical physical system, in the realm of quaternionic quantum mechanics, while no alternative can exist in complex quantum mechanics, and we discuss some differences between them.

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