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arXiv 1608.07473gr-qchep-th
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从物理对称到突现规范对称性

From physical symmetries to emergent gauge symmetries

Carlos Barceló, Raúl Carballo-Rubio, Francesco Di Filippo, Luis J. Garay

摘要:

规范对称性表明在给定场论的相关自由度的描述中的冗余,并且限制了可观测量的性质。相对论性场的涌现理论所面临的问题之一,是要理解规范对称性如何在一个根本不包含这些对称性的系统中出现。在本文中,我们开始了系统的研究,旨在建立一个令人满意的数学和物理图片这个问题,首先处理阿贝尔场论。我们讨论了如何平凡化,由于去耦和缺乏激励的一些自由度,与物理对称性相关的诺特电流导致紧急规范对称性在特定情况下。为了明确这种机制是如何工作的,并阐明其背后的物理,详细地给出了一个矢量场的相对论性场论的例子,并讨论了这些思想与对紧急引力程序具有重要意义的著名结果(如温伯格-威滕定理)的相互作用。

英文摘要:

Gauge symmetries indicate redundancies in the description of the relevant degrees of freedom of a given field theory and restrict the nature of observable quantities. One of the problems faced by emergent theories of relativistic fields is to understand how gauge symmetries can show up in systems that contain no trace of these symmetries at a more fundamental level. In this paper we start a systematic study aimed to establish a satisfactory mathematical and physical picture of this issue, dealing first with abelian field theories. We discuss how the trivialization, due to the decoupling and lack of excitation of some degrees of freedom, of the Noether currents associated with physical symmetries leads to emergent gauge symmetries in specific situations. An example of a relativistic field theory of a vector field is worked out in detail in order to make explicit how this mechanism works and to clarify the physics behind it. The interplay of these ideas with well-known results of importance to the emergent gravity program, such as the Weinberg-Witten theorem, are 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。

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