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Pushing the limits of time beyond the Big Bang singularity: Scenarios for the branch cut universe
Author(s) -
Zen Vasconcellos César A.,
Hess Peter O.,
Hadjimichef Dimiter,
Bodmann Benno,
Razeira Moisés,
Volkmer Guilherme L.
Publication year - 2021
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/asna.202113993
Subject(s) - physics , universe , big rip , big bang (financial markets) , flatness problem , metric expansion of space , singularity , theoretical physics , big bounce , de sitter universe , astrophysics , cosmology , physical cosmology , dark energy , geometry , mathematics , economics , finance , steady state theory
In this contribution, we identify two scenarios for the evolutionary branch cut universe. In the first scenario, the universe evolves continuously from the negative complex cosmological time sector, prior to a primordial singularity, to the positive one, circumventing continuously a branch cut, and no primordial singularity occurs in the imaginary sector, only branch points. In the second scenario, the branch cut and branch point disappear after the realization of the imaginary component of the complex time by means of a Wick rotation, which is replaced by the thermal time. In the second scenario, the universe has its origin in the Big Bang, but the model contemplates simultaneously a mirrored parallel evolutionary universe going backwards in the cosmological thermal time negative sector. A quantum formulation based on the Wheeler–DeWitt equation is sketched and preliminary conclusions are drawn.