Bulk-boundary thermodynamics of charged black holes in higher-derivative theory

Abstract

The connection between bulk and boundary thermodynamics in Einstein–Maxwell theory is well established using AdS/CFT correspondence. In the context of general higher-derivative gravity coupled to a U(1) gauge field, we examine the resemblance of the first law of thermodynamics between bulk and boundary, followed by an extended phase space description on both sides. Higher-derivative terms related to different powers of the string theory parameter $$\alpha '$$ α ′ emerged from a consistent truncation in the bulk supergravity action. We demonstrate that one must include the fluctuation of $$\alpha '$$ α ′ in the bulk thermodynamics as a bookkeeping tool to match the bulk first law and Smarr relation with the boundary side. Consequently, the Euler relation and the boundary first law are altered by adding two central charges $$({\texttt{a}}, {\texttt{c}}).$$ ( a , c ) . To support our general conclusion, we consider the black hole in Gauss–Bonnet gravity and the general four-derivative theory. Finally, we examine the bulk and boundary aspects of the extended phase space description for higher-derivative-corrected black holes.