Scale-invariance, dynamically induced Planck scale and inflation in the Palatini formulation
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.
- Publication:
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Journal of Physics Conference Series
- Pub Date:
- November 2021
- DOI:
- 10.1088/1742-6596/2105/1/012005
- arXiv:
- arXiv:2107.04408
- Bibcode:
- 2021JPhCS2105a2005G
- Keywords:
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- General Relativity and Quantum Cosmology;
- High Energy Physics - Phenomenology;
- High Energy Physics - Theory
- E-Print:
- 10 pages, 5 figures, Contribution to Proceedings of HEP 2021, Thessaloniki, Greece, Based on: 2006.09124 and 2104.04550. arXiv admin note: text overlap with arXiv:2104.04550