Late Time Acceleration of the Universe from Quantum Gravity
Keyword(s):
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.
2021 ◽
Vol 2021
(12)
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pp. 040
Keyword(s):
2013 ◽
Vol 58
(4)
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pp. 1401-1403
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Keyword(s):
1997 ◽
Vol 11
(20)
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pp. 867-875
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1983 ◽
Vol 97
(2)
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pp. 435-452
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1992 ◽
Vol 61
(12)
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pp. 4356-4366
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1978 ◽
Vol 358
(1694)
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pp. 267-280
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