arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1209.1850math-phmath.FAmath.MPquant-ph
收藏

相空间中的量子力学:薛定谔和莫亚尔表示

Quantum mechanics in phase space: The Schrödinger and the Moyal representations

Nuno Costa Dias, Maurice de Gosson, Franz Luef, João Nuno Prata

摘要:

本文给出了薛定谔表象中量子力学的相空间表述,并导出了相应的Weyl伪微分。我们证明了由此产生的理论是酉等价的标准的“配置空间”制定,并表明,它允许一个统一的纯和混合量子态的治疗。在本文的第二部分中,我们确定了将相空间薛定谔表示映射到另一个(称为Moyal)表示的幺正变换(及其无穷小生成元),其中波函数是变形量子化中常见的交叉维格纳函数。这种表示的一些功能进行了研究,即相关的伪微分和主要的频谱和动力学结果。最后讨论了与形变量子化的关系。

英文摘要:

We present a phase space formulation of quantum mechanics in the Schrödinger representation and derive the associated Weyl pseudo-differential calculus. We prove that the resulting theory is unitarily equivalent to the standard "configuration space" formulation and show that it allows for a uniform treatment of both pure and mixed quantum states. In the second part of the paper we determine the unitary transformation (and its infinitesimal generator) that maps the phase space Schrödinger representation into another (called Moyal) representation, where the wave function is the cross-Wigner function familiar from deformation quantization. Some features of this representation are studied, namely the associated pseudo-differential calculus and the main spectral and dynamical results. Finally, the relation with deformation quantization is discussed.

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。

↑