Reconstruction of modified Gauss–Bonnet gravity for emergent universe
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Date
2022
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University of Zululand
Abstract
We present a flat emergent universe model in modified Gauss–Bonnet gravity in four
dimensions. The emergent universe model is free from a big-bang singularity and also
describes the observed universe fairly well. It is assumed that the present universe
emerged from a static Einstein universe phase that exists in the infinite past. To obtain
the flat emergent universe model, we reconstruct mimetic modified f(G)-gravity (G
representing Gauss–Bonnet terms). The functional form of f(G)-gravity is determined
with or without matter, and can accommodate the early inflation and late accelerating
phases satisfactorily. In contrast, in Einstein’s general theory of relativity, a flat emergent
universe was obtained within the modified matter sector.
Description
Reconstruction of modified Gauss–Bonnet gravity for emergent universe
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Citation
Paul, B.C., Maharaj, S.D. and Beesham, A., 2022. Reconstruction of modified Gauss–Bonnet gravity for emergent universe. International Journal of Modern Physics D, 31(06), p.2250045.