We show how to reliably calculate quantum gravitational corrections to cosmological models using the unique effective action formalism for quantum gravity. Our calculations are model independent and apply to any ultraviolet complete theory of quantum gravity that admit general relativity as a low energy theory. We show that it is important to consider the full effective action to obtain renormalization group invariant solutions. We investigate the validity range of our techniques within simple cosmological models.
Calmet, X., Casadio, R., Sebastianutti, M. (2025). Quantum Gravitational Corrections in Cosmology. PHYSICS LETTERS. SECTION B, 960, 1-5 [10.1016/j.physletb.2024.139208].
Quantum Gravitational Corrections in Cosmology
Casadio, Roberto;
2025
Abstract
We show how to reliably calculate quantum gravitational corrections to cosmological models using the unique effective action formalism for quantum gravity. Our calculations are model independent and apply to any ultraviolet complete theory of quantum gravity that admit general relativity as a low energy theory. We show that it is important to consider the full effective action to obtain renormalization group invariant solutions. We investigate the validity range of our techniques within simple cosmological models.| File | Dimensione | Formato | |
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