Universal Structure of Covariant Holographic Two-Point Functions In Massless Higher-Order Gravities

Aug 1, 2018
31 pages
Published in:
  • JHEP 10 (2018) 063
  • Published: Oct 9, 2018
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Abstract: (Springer)
We consider massless higher-order gravities in general D = d + 1 dimensions, which are Einstein gravity extended with higher-order curvature invariants in such a way that the linearized spectrum around the AdS vacua involves only the massless graviton. We derive the covariant holographic two-point functions and find that they have a universal structure. In particular, the theory-dependent overall coefficient factor CT {\mathcal{C}}_T can be universally expressed by (d1)CT=(a/) \left(d - 1\right){\mathcal{C}}_T = \ell \left(\partial a/\partial \ell \right) , where a is the holographic a-charge and ℓ is the AdS radius. We verify this relation in quasi-topological Ricci polynomial, Einstein-Gauss-Bonnet, Einstein-Lovelock and Einstein cubic gravities. In d = 4, we also find an intriguing relation between the holographic c and a charges, namely c=13(a/) c=\frac{1}{3}\ell \left(\partial a/\partial \ell \right) , which also implies CT=c {\mathcal{C}}_T=c .
Note:
  • latex, 31 pages, typos corrected
  • AdS-CFT Correspondence
  • Classical Theories of Gravity
  • gravitation: higher-order
  • curvature: higher-order
  • graviton: massless
  • vacuum state: anti-de Sitter
  • spectrum: linear
  • holography
  • two-point function
  • covariance