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arXiv 1402.5940hep-thhep-ph
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具有任意数目紧化额外维的Yang-Mills理论

Yang-Mills theories with an arbitrary number of compactified extra dimensions

M. A. López-Osorio, E. Martínez-Pascual, H. Novales-Sánchez, J. J. Toscano

摘要:

通过一种新的紧化方案,将著名的具有一个$ S^{1} / Z_{2}$普适额外维(UED)的Yang-Mills理论推广到任意数目的空间额外维.本文研究的黎曼平坦流形包含$ n $空间额外维,这些额外维由轨道流形$ S^{1} / Z_{2}$的$ n $拷贝定义.在这种方法中,我们提出的规范结构和有效的四维理论的质量谱。我们介绍了有效理论的标准和非标准规范变换的概念,并明确确定了大量的矢量场的出现在相同数量的无质量(“伪戈德斯通”)标量的紧化理论,验证了希格斯机制在紧化过程中运作。结果发现,与一个UED场景相比,在具有两个或更多UED的情况下,出现大量的标量场。此外,在相空间层次上,哈密顿分析得出,高维和紧化理论是经典等价的使用正则变换的基本概念。这项工作奠定了基础,更广泛地研究这些理论的量子化和预测能力的量子涨落的水平。

英文摘要:

The well-known Yang-Mills theory with one $ S^{1} / Z_{2}$ universal extra dimension (UED) is generalized to an arbitrary number of spatial extra dimensions through a novel compactification scheme. In this paper, the Riemannian flat based manifold under consideration contains $ n $ spatial extra dimensions defined by $ n $ copies of the orbifold $ S^{1} / Z_{2}$. In this approach, we present the gauge structure and the mass spectrum of the effective four-dimensional theory. We introduce the concept of standard and nonstandard gauge transformations of the effective theory, and explicitly identify the emergence of massive vector fields in the same number as massless ('pseudo-Goldstone') scalars in the compactified theory, verifying that a Higgs-like mechanism operates in the compactification process. It is found that, in contrast with the one UED scenario, in cases with two or more UEDs there emerge massive scalar fields. Besides, at phase-space level, the Hamiltonian analysis yields that the higher-dimensional and compactified theories are classically equivalent using the fundamental concept of canonical transformation. This work lays the ground for a wider study on these theories concerning their quantization and predictive power at the level of quantum fluctuations.

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