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arXiv · 2406.15138

Equivalence of Noether charge and Hilbert action boundary term formulas for the black hole entropy in $F(R_{abcd})$ gravity theory

Wei Guo·Xiyao Guo·Mingfeng Li·Zili Mou·Hongbao Zhang
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Abstract

By working with the covariant phase space formalism, we have shown that not only can the Hamiltonian conjugate to a Killing vector field $\xi$ be expressed as the sum of the associated Noether charge and $\xi$ contracted with the Hilbert action boundary term for $F(R_{abcd})$ gravity, but also be written as its contraction with another $\xi$ independent tensor field. With this, we have proven the equivalence of Noether charge and Hilbert action boundary term formulae for the stationary black hole entropy in $F(R_{abcd})$ gravity, which is further substantiated by our explicit computation using both formulae.

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Wei Guo, Xiyao Guo, Mingfeng Li, Zili Mou, Hongbao Zhang. 2024-06-21. Equivalence of Noether charge and Hilbert action boundary term formulas for the black hole entropy in $F(R_{abcd})$ gravity theory. https://doi.org/10.1103/physrevd.110.064071

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