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Tensor-to-scalar ratio in primordial cosmology from quantum gravity with purely virtual particles
Title: Prediction of the tensor-to-scalar ratio in primordial cosmology from quantum gravity with purely virtual particles
Abstract: I discuss the quantization of purely virtual particles in quantum gravity and its applications to primordial cosmology. The inflation mechanism is unique and coincides with the Starobinsky one. However, the Weyl squared term included in the action, which must be understood as purely virtual, changes the final predictions. In particular, the tensor-to-scalar ratio r lies within the range 0.0004 - 0.0035. Tilts and higher-order corrections can be calculated by viewing inflation as a certain RG flow. The spectra are understood as correlation functions that obey Callan-Symanzik equations. They can be expressed as expansions in powers of a running "fine structure" constant of inflation.
For the seminar series Quantum Gravity and All of That, https://qgholqi.inpcs.net/
Fisica Quantistica per tutti
I segreti della meccanica quantistica alla portata di tutti, spiegati con parole semplici
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Libri miei:
1. Dalla fisica alla vita - Viaggio nell'infinitamente piccolo e ritorno
https://amzn.to/2V1UCCM (ebook)
https://amzn.to/3jE6ViV (cartaceo)
2. L'involuzione del pensiero scientifico - Come la civiltà perde conoscenza
https://amzn.to/37dZLdC (ebook)
https://amzn.to/3A3aeFr (cartaceo)
Testo universitario (avanzato):
3. Renormalization: https://amzn.to/3dAjwzV
Credits
Progressive Rock by Audionautix is licensed under a Creative Commons Attribution 4.0 license. https://creativecommons.org/licenses/by/4.0/
Artist: http://audionautix.com/
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