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arXiv · 1602.08949

Inflation in pure gravity with only massless spin-2 fields

Bayram Tekin
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Abstract

We show that without introducing additional fields or extra degrees of freedom, a specific higher derivative extension of Einstein's gravity that has only a massless spin-2 excitation in its perturbative spectrum, has an inflationary period, a quasi-de Sitter phase with enough number of e-foldings required to solve the horizon and related problems. The crucial ingredient in the construction is the curvature dependence of the effective Newton's constant.

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Bayram Tekin. 2016-02-29. Inflation in pure gravity with only massless spin-2 fields. https://arxiv.org/abs/1602.08949

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