Inflation from entropy
arXiv:2509.23987 · doi:10.1140/epjc/s10052-025-15157-y
Abstract
We investigate cosmological solutions for the modified gravity theory obtained from quantum relative entropy between the metric of spacetime and the metric induced by the geometry and matter fields. The vacuum equations admit inflationary solutions, hinting at an entropic origin for inflation. Equations also admit a regime of phantom like behavior. Assuming that the relation between slow roll parameters and CMB observables holds for entropic gravity, the theory predicts a viable spectrum.
This is the published version of the article, includes corrections mandated by reviewers
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