$c$-functions in Higher-derivative Flows Across Dimensions

Abstract

In the context of gravitational theories describing renormalization group flows across dimensions via AdS/CFT, we study the role of higher-derivative corrections to Einstein gravity. We use the Null Energy Condition to derive monotonicity properties of candidate holographic central charges formed by combinations of metric functions. We also implement an entropic approach to the characterization of the four-derivative flows using the Jacobson-Myers functional and demonstrate, under reasonable conditions, monotonicity of certain terms in the entanglement entropy via the appropriate generalization of the Ryu-Takayanagi prescription. In particular, we show that any flow from a higher dimensional theory to a holographic CFT${}_2$ satisfies a type of monotonicity. We also uncover direct relations between NEC-motivated and entropic central charges.

37 pages; references added

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Cited by in corpus (2)

• Explicit Entropic Proofs of Irreversibility Theorems for Holographic RG Flows
• Probing sine dilaton gravity with flow central charge