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arXiv 0811.0305quant-phhep-th
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非Hermitian Hamilton算子的度量

Gauging non-Hermitian Hamiltonians

H. F. Jones

摘要:

我们解决耦合非厄米系统的问题,作为基本的,而不是有效的理论,电磁场。在这种理论中,可观测量不是出现在哈密顿量中的$\bs{x}$和$\bs{p}$,而是通过度规算符构造的量$\bs{X}$和$\bs{P}$。按照厄米量子力学中测量整体对称性的类似过程,我们发现$\bs{X}$中相应的规范变换意味着$\bs{P}\to \bs{P} - e\bs{A}(\bs{X})$形式的最小替换。我们讨论了如何管理电磁跃迁的相关矩阵元素可以计算在特殊情况下的斯旺森哈密顿量,其中等效的厄米哈密顿量$h$是本地的,并在更一般的例子中的虚立方相互作用,其中$H$是本地的,但$h$不是。

英文摘要:

We address the problem of coupling non-Hermitian systems, treated as fundamental rather than effective theories, to the electromagnetic field. In such theories the observables are not the $\bs{x}$ and $\bs{p}$ appearing in the Hamiltonian, but quantities $\bs{X}$ and $\bs{P}$ constructed by means of the metric operator. Following the analogous procedure of gauging a global symmetry in Hermitian quantum mechanics we find that the corresponding gauge transformation in $\bs{X}$ implies minimal substitution in the form $\bs{P}\to \bs{P} - e\bs{A}(\bs{X})$. We discuss how the relevant matrix elements governing electromagnetic transitions may be calculated in the special case of the Swanson Hamiltonian, where the equivalent Hermitian Hamiltonian $h$ is local, and in the more generic example of the imaginary cubic interaction, where $H$ is local but $h$ is not.

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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