Entropy of black hole in the infinite-derivative gravity
Abstract
We compute the Wald entropy of the Schwarzschild black hole in the ghost-free, infinite derivative gravity that is quadratic in curvature. This is not given purely by the area law but includes an additional contribution depending on the power of d'Alembertian operator, when requiring that the massless graviton be the only propagating mode in the Minkowski sapcetime.
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