Theoretical analysis reveals accelerated expansion and late-time stability in bouncing cosmology, indicating a viable nonsingular alternative to the Big Bang.
This study offers a probable solution to the singularity problems borne with the conventional Big Bang cosmology by analyzing the dynamics of a bouncing cosmological model within the paradigm of a remodeled gravity framework. We peruse the cosmic bounce conditions and denote the cosmological parameters as functions of cosmic time. Furthermore, we employ the redshift parameter and express the cosmological parameters in terms of redshift graphically to remodel an $$f(R)$$ gravity model. An accelerated attribute of the Universe expansion is unveiled through these graphs. We ultimately reconstruct the $$f(R)$$ gravity model for a genuinely bouncing cosmology corresponding to a hyperbolic scale factor. Conclusively, we analyze the speed of sound to explore stability. The late-time stability is proved by plots of the sound speed against redshift.
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Ilyas et al. (2026) studied this question.
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