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arXiv · 0707.1737

Conformal invariant powers of the Laplacian, Fefferman-Graham ambient metric and Ricci gauging

Ruben Manvelyan·Karapet Mkrtchyan·Ruben Mkrtchyan
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Abstract

The hierarchy of conformally invariant k-th powers of the Laplacian acting on a scalar field with scaling dimensions $Δ_{(k)}=k-d/2$, k=1,2,3 as obtained in the recent work [1] is rederived using the Fefferman-Graham d+2 dimensional ambient space approach. The corresponding mysterious "holographic" structure of these operators is clarified. We explore also the d+2 dimensional ambient space origin of the Ricci gauging procedure proposed by A. Iorio, L. O'Raifeartaigh, I. Sachs and C. Wiesendanger as another method of constructing the Weyl invariant Lagrangians. The corresponding \emph{gauged} ambient metric, Fefferman-Graham expansion and extended Penrose-Brown-Henneaux transformations are proposed and analyzed.

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Ruben Manvelyan, Karapet Mkrtchyan, Ruben Mkrtchyan. 2007-10-10. Conformal invariant powers of the Laplacian, Fefferman-Graham ambient metric and Ricci gauging. https://doi.org/10.1016/j.physletb.2007.10.014

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