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Late Time Acceleration of the Universe from Quantum Gravity
Version 1
: Received: 6 January 2022 / Approved: 10 January 2022 / Online: 10 January 2022 (12:49:38 CET)
A peer-reviewed article of this Preprint also exists.
PANG, X. Late Time Acceleration of the Universe From Quantum Gravity. Universe 2022, 8, 163. PANG, X. Late Time Acceleration of the Universe From Quantum Gravity. Universe 2022, 8, 163.
Abstract
We show that the accelerating expansion phase of the universe can emerge from the group field theory formalism, a candidate theory of quantum gravity. The cosmological evolution can be extracted from condensate states using mean field approximation, in a form of modified FLRW equations. By introducing an effective equation of state w, we can reveal the relevant features of the evolution, and show that with proper choice of parameters, w will approach to −1, corresponds to the behaviour of cosmological constant, results in a late time acceleration and leads to de Sitter spacetime asymptotically.
Keywords
dark energy theory; quantum cosmology; quantum gravity phenomenology
Subject
Physical Sciences, Quantum Science and Technology
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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