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arXiv 1706.01149hep-thcond-mat.mes-hallcond-mat.str-elmath-phmath.MP
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关于Berry连接的评论

A Comment On Berry Connections

Gregory W. Moore

摘要:

当量子系统族配备有连续的哈密顿量族,使得在公共谱中存在间隙时,可以定义Berry连接的概念。在本文中,我们强调,一般来说,由于定义量子系统族的希尔伯特丛并不伴随着正则平凡化,因此实际上并不是一个单一的Berry连接,而是一个Berry连接族。两个例子说明了这种说法可能会产生物理后果。

英文摘要:

When families of quantum systems are equipped with a continuous family of Hamiltonians such that there is a gap in the common spectrum one can define a notion of a Berry connection. In this note we stress that, in general, since the Hilbert bundle defining the family of quantum systems does not come with a canonical trivialization there is in fact not a single Berry connection but rather a family of Berry connections. Two examples illustrate that this remark can have physical consequences.

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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