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arXiv · 2501.16628

The Regular Ricci-Inverse Cosmology with Multiple Anticurvature Scalars

Yicen Mou
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Abstract

We investigate the modified gravity in which the Lagrangian of gravity is a function of the trace of the n-th matrix power of Ricci tensor in a Friedmann-Lemaitre-Robertson-Walker(FLRW) spacetime. When n is negative, the inverse of Ricci tensor, also called the anticurvature tensor, will be introduced. We design a new class of Ricci-inverse theory containing two anticurvature scalars and resulting to be free from the singularity problem.

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Yicen Mou. 2025-01-28. The Regular Ricci-Inverse Cosmology with Multiple Anticurvature Scalars. https://arxiv.org/abs/2501.16628

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