AN EMERGENT COSMOLOGICAL MODEL FROM ASYMPTOTIC SAFETY
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Date
2024-05-03
Authors
Zholdasbek, Aknur
Journal Title
Journal ISSN
Volume Title
Publisher
Nazarbayev University School of Sciences and Humanities
Abstract
The modern cosmological models tell us that the early universe has gone through a phase of accelerated expansion, known as inflation, which solves the horizon and flatness problems. In this thesis, I present an inflationary cosmological model based on the Asymptotically Safe behavior of the Newton constant at Planckian energies. Unlike
other models, the variability of G is given by a multiplicative coupling constant χ in the
matter Lagrangian with a conserved energy-momentum tensor, and the specific functional
form of χ is deduced from Asymptotically Safe gravity. In the beginning, the universe
undergoes a quasi-de-Sitter phase and, then transitions to the conventional cosmological
evolution after the Planck Era.
Description
Keywords
Type of access: Restricted, cosmology, physics
Citation
Zholdasbek, A. (2024). An Emergent Cosmological Model From Asymptotic Safety. Nazarbayev University School of Sciences and Humanities