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arXiv 1902.02613hep-thgr-qc
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从共形群的规范理论讨论二维因引力action

On two-vierbein gravity action from gauge theory of conformal group

I. Lovrekovic

摘要:

研究了由两个对应于共形群生成元的规范场建立的引力作用量。从作用量出发,在适当的约束条件下,我们可以得到爱因斯坦引力和共形引力,我们保持两个独立的规范场,并积分出对应于洛伦兹变换生成元的场。我们用两个维因来确定这两个规范场,并使它们在Anti-de Sitter空间中扰动。这给出了不同于爱因斯坦引力和共形引力线性化方程的线性化方程。我们还研究了一个规范场在平坦空间周围扰动和一个规范场在零周围扰动的线性化方程,以及规范场彼此成比例的情况。

英文摘要:

We study the gravity action built from two gauge fields corresponding to the generators of the conformal group. Starting with the action from which one can obtain Einstein gravity and conformal gravity upon imposing suitable constraints, we keep two independent gauge fields and integrate out the field corresponding to the generator of Lorentz transformations. We identify the two gauge fields with two vierbeins and perturb them around an Anti--de Sitter space. This gives the linearized equations that differ from both, Einstein gravity and conformal gravity linearized equations. We also study the linearized equations for one gauge field perturbed around the flat space and one around zero, and the case when the gauge fields are proportional to each other.

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