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Abstract: We discuss the existence and properties of a nontrivial fixed point inf(R)-gravity, where f is a polynomial of order up to six. Within thisseven-parameter class of theories, the fixed point has threeultraviolet-attractive and four ultraviolet-repulsive directions; this bringsfurther support to the hypothesis that gravity is nonperturbativelyrenormalizabile.



Autor: Alessandro Codello, Roberto Percacci, Christoph Rahmede

Fuente: https://arxiv.org/







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