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arXiv 1703.00526hep-th
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弯曲背景上的大质量矢量场:非最小耦合、量子化和发散

Massive vector field on curved background: non-minimal coupling, quantization and divergences

Ioseph L. Buchbinder, Tibério de Paula Netto, Ilya L. Shapiro

摘要:

研究了非极小耦合外部引力场的有质量矢量场论的有效作用量。这样的理论是一个有趣的模型,无论是从理论方面,也由于各种唯象应用到宇宙学和天体物理学。本工作试图通过探索耦合到外部对称二阶张量的自由质量矢量,在量子水平上对其性质进行系统的研究。利用Stueckelberg标量场恢复规范不变性。然后,利用特殊的规范固定和外场变量变化的非定域性,将作用量的双线性形式对角化,发展了研究有效作用量的相容方法。作为结果,我们得到了一个完整的非线性结构的有效作用量的分歧,并讨论其性质。

英文摘要:

We study the effective action for the massive vector field theory non-minimally coupled to external gravitational field. Such a theory is an interesting model both from the theoretical side and also due to the various phenomenological applications to cosmology and astrophysics. The present work pretends to initiate a systematic study of its properties at the quantum level, by exploring free massive vector coupled to an external symmetric second-rank tensor. Stueckelberg scalar field is used to restore the gauge invariance. After that, by using a special gauge fixing and non-local in external fields change of variables, we diagonalize the bilinear form of the action and develop a consistent procedure to study the effective action. As a result we derive a complete non-linear structure of divergences of the effective action and discuss its properties.

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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