Theoretical analysis demonstrates a singularity-free cosmic bounce in an ultramassive black star model, suggesting observational signatures in primordial gravitational waves.
This preprint proposes an alternative model to the initial Big Bang singularity by postulating that the observable universe originated from the quantum bounce of an ultramassive object ("Black Star") containing the total mass-energy of the cosmos (≈ 10⁵³ kg). Using modified Friedmann equations incorporating Loop Quantum Cosmology (LQC) corrections, the study examines how reaching Planck density induces a repulsive gravitational phase transition rather than a physical collapse to a point of infinite density. It also explores cosmological implications, including infrared suppression in the primordial gravitational wave spectrum and parity asymmetry in CMB polarization as potential observational signatures.
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Eduardo Benavent Altur (2026) studied this question.
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