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In this article we follow a previously developed theoretical approach, basedin the tools of the singular semi-Riemannian geometry, to push the limits oftime beyond the primordial spacetime singularity. By complexifying theFriedmann-Lema\^itre-Robertson-Walker (FLRW) metric and Friedmann's equationswe model a branch cut universe, in which the cosmic FLRW metric scale factor isanalytically continued to the complex plane, and becomes equivalent from aconceptual point of view of describing a hypothetical general metric ofmaximally symmetric and homogeneous superposed multiple universes.

Pushing the limits of time beyond the Big Bang singularity: The branch cut universe