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arXiv quant-ph/0506026quant-phhep-thmath-phmath.MP
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标准与非标准量子模型:量子光学中经典SU(2)和SU(1,1)系统的非交换形式

Standard and Non-Standard Quantum Models : A Non-Commutative Version of the Classical System of SU(2) and SU(1,1) Arising from Quantum Optics

Kazuyuki Fujii

摘要:

这是一篇具有挑战性的论文,包括一些回顾和新的结果。由于在(quant-ph/0502174)中利用Jaynes-Commings模型和量子对角化方法构造了基于紧群SU(2)的经典系统的非对易版本,我们通过修改紧情形构造了一个基于非紧群SU(1,1)的经典系统的非对易版本.该模型中的哈密顿量不是厄米的而是伪厄米的,这就导致了两种模型的差别。例如,在SU(1,1)的经典表示论中,酉表示是从起点开始的无穷维。因此,要发展SU(1,1)非对易系统的幺正理论,需要有无穷多个非对易系统,这就意味着有一种{ \bf第二非对易化}。这是一个非常困难和有趣的问题。我们发展了一个相应的理论,但它并不总是足够的,并提出了一些具有挑战性的问题,如何经典性质可以扩展到非交换的情况下。本文的第一部分是基于标准模型(SU(2)系统),第二部分是基于非标准模型(SU(1,1)系统)。这种对比可以使标准模型和非标准模型之间的相似性和差异性变得清晰。

英文摘要:

This is a challenging paper including some review and new results. Since the non-commutative version of the classical system based on the compact group SU(2) has been constructed in (quant-ph/0502174) by making use of Jaynes-Commings model and so-called Quantum Diagonalization Method in (quant-ph/0502147), we construct a non-commutative version of the classical system based on the non-compact group SU(1,1) by modifying the compact case. In this model the Hamiltonian is not hermite but pseudo hermite, which causes a big difference between two models. For example, in the classical representation theory of SU(1,1), unitary representations are infinite dimensional from the starting point. Therefore, to develop a unitary theory of non-commutative system of SU(1,1) we need an infinite number of non-commutative systems, which means a kind of {\bf second non-commutativization}. This is a very hard and interesting problem. We develop a corresponding theory though it is not always enough, and present some challenging problems concerning how classical properties can be extended to the non-commutative case. This paper is arranged for the convenience of readers as the first subsection is based on the standard model (SU(2) system) and the next one is based on the non-standard model (SU(1,1) system). This contrast may make the similarity and difference between the standard and non-standard models clear.

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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