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arXiv · 2107.04408

Scale-invariance, dynamically induced Planck scale and inflation in the Palatini formulation

Ioannis D. Gialamas·Alexandros Karam·Thomas D. Pappas·Antonio Racioppi·Vassilis C. Spanos
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Abstract

We present two scale invariant models of inflation in which the addition of quadratic in curvature terms in the usual Einstein-Hilbert action, in the context of Palatini formulation of gravity, manages to reduce the value of the tensor-to-scalar ratio. In both models the Planck scale is dynamically generated via the vacuum expectation value of the scalar fields.

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Ioannis D. Gialamas, Alexandros Karam, Thomas D. Pappas, Antonio Racioppi, Vassilis C. Spanos. 2021-07-08. Scale-invariance, dynamically induced Planck scale and inflation in the Palatini formulation. https://arxiv.org/abs/2107.04408

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