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Keywords = unfolding Big Bang in classical physics

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23 pages, 373 KB  
Article
Few-Grid-Point Simulations of Big Bang Singularity in Quantum Cosmology
by Miloslav Znojil
Symmetry 2025, 17(6), 972; https://doi.org/10.3390/sym17060972 - 19 Jun 2025
Viewed by 572
Abstract
In the context of the current lack of compatibility of the classical and quantum approaches to gravity, exactly solvable elementary pseudo-Hermitian quantum models are analyzed, supporting the acceptability of a point-like form of the Big Bang. The purpose is served by a hypothetical [...] Read more.
In the context of the current lack of compatibility of the classical and quantum approaches to gravity, exactly solvable elementary pseudo-Hermitian quantum models are analyzed, supporting the acceptability of a point-like form of the Big Bang. The purpose is served by a hypothetical (non-covariant) identification of the “time of the Big Bang” with Kato’s exceptional-point parameter t=0. The consequences (including the ambiguity of the patterns of unfolding the singularity after the Big Bang) are studied in detail. In particular, singular values of the observables are shown to be useful in the analysis. Full article
(This article belongs to the Section Physics)
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