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arXiv 2110.03377gr-qc
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具有非线性对称实现的引力模型

Gravity models with nonlinear symmetry realization

Stanislav Alexeyev, Daniil Krichevskiy, Boris Latosh

摘要:

讨论了三种具有非线性共形对称实现的模型。最简单的模型只能描述一个减速膨胀的宇宙,而不包括暴胀。其他模型等价于变量重新参数化。所有这些模型都包含可以通过目标空间的额外对称性排除的鬼自由度。

英文摘要:

Three models with nonlinear realizations of conformal symmetry are discussed. The simplest model can only describe a universe expanding with a deceleration and does not include inflation. The other models are equivalent up to a variables reparametrization. All these models contain ghost degrees of freedom which may be excluded with an additional symmetry of the target space.

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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