Viable Singularity-Free fR Gravity Without a Cosmological ConstantReportar como inadecuado



 Viable Singularity-Free fR Gravity Without a Cosmological Constant


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Several authors have argued that self-consistent $fR$ gravity models distinct from $\Lambda $CDM are almost ruled out. Confronting such claims, we present a particular two-parameter $fR$ model that: a is cosmologically viable and distinguishable from $\Lambda $CDM; b is compatible with the existence of relativistic stars; c is free of singularities of the Ricci scalar during the cosmological evolution and d allows the addition of high curvature corrections that could be relevant for inflation.



Autor: Vinicius Miranda; Sergio E. Joras; Ioav Waga; Miguel Quartin

Fuente: https://archive.org/



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