A note on the definition of gravitational energy for quadratic curvature gravity via topological regularization
Meng-Liang Wang(王梦亮)1,† and Jun-Jin Peng(彭俊金)2,‡
1 Guizhou Key Laboratory in Physics and Related Areas, Guizhou University of Finance and Economics, Guiyang 550025, China; 2 School of Physics and Electronic Science, Guizhou Normal University, Guiyang 550001, China
Abstract Within the framework of four-dimensional quadratic curvature gravities in the appearance of a negative cosmological constant, a definition for the gravitational energy of solutions with anti-de Sitter (AdS) asymptotics was put forward by Giribet et al. [Phys. Rev. D98 044046 (2018)]. This was achieved by adding proper topological invariant terms to the gravity action to render the variation problem well-posed. We prove that the definition via the procedure of topological regularization can be covered by our previous work [Int. J. Mod. Phys. A35 2050102 (2020)] in four dimensions. Motivated by this, we further generalize the results to generic diffeomorphism invariant theories of gravity in arbitrary even dimensions.
Meng-Liang Wang(王梦亮) and Jun-Jin Peng(彭俊金) A note on the definition of gravitational energy for quadratic curvature gravity via topological regularization 2020 Chin. Phys. B 29 120401
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