From conformal to Einstein gravity
From conformal to Einstein gravity
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从共形到爱因斯坦引力
DOI:
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发表时间:
2016
期刊:
影响因子:
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通讯作者:
R. Olea
中科院分区:
文献类型:
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作者:
Giorgos Anastasiou;R. Olea
We provide a simple derivation of the equivalence between Einstein and Conformal Gravity (CG) with Neumann boundary conditions given by Maldacena. As Einstein spacetimes are Bach flat, a generic solution to CG would contain both Einstein and non-Einstein part. Using this decomposition of the spacetime curvature in the Weyl tensor, makes manifest the equivalence between the two theories, both at the level of the action and the variation of it. As a consequence, we show that the on-shell action for Critical Gravity in four dimensions is given uniquely in terms of the Bach tensor.