One-Loop Divergences in 6D Conformal Gravity

Abstract

Using Exact Renormalization Group Equation approach and background field method, we investigate the one-loop problem in a six-dimensional conformal gravity theory whose Lagrangian takes the same form as holographic Weyl anomaly of multiple coincident M5-branes. We choose the backgrounds to be the symmetric Einstein spaces including S6, CP3, S2 \times S4, S2 \times CP2, S3 \times S3 and S2 \times S2 \times S2. Evaluating the functional sums gives power-law and logarithmic divergences. We extract from the specific values of logarithmic divergence on above backgrounds, the coefficient in front of Euler density and two linear equations constraining the coefficients in front of three type-B conformal invariants. As a test of the effectiveness of Exact Renormalization Group Equation approach to quantum conformal gravity, we reexaminethe one-loop problem in four-dimensional conformal gravity and confirm the logarithmic divergence derived from generalized Schwinger-DeWitt method.

21 pages

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Cited by in corpus (8)

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• The component structure of conformal supergravity invariants in six dimensions
• Simple recipe for holographic Weyl anomaly
• The search for the universality class of metric quantum gravity
• One loop partition function of six dimensional conformal gravity using heat kernel on AdS
• Classical and holographic aspects of conformal gravity in four dimensions
• One-loop divergences in 7D Einstein and 6D Conformal Gravities