
In this review article, we first discuss a possible regularization of the big bang curvature singularity of the standard Friedmann cosmology, where the curvature singularity is replaced by a spacetime defect. We then consider the hypothesis that a new physics phase gave rise to this particular spacetime defect. Specifically, we set out on an explorative calculation using the IIB matrix model, which has been proposed as a particular formulation of nonperturbative superstring theory (M-theory).
invited talk at the XXVIIth Cracow Epiphany Conference on the Future of Particle Physics, Cracow, Poland, January 7-10, 2021; v6: published version
High Energy Physics - Theory, High Energy Physics - Theory (hep-th), Physics, ddc:530, FOS: Physical sciences, General Relativity and Quantum Cosmology (gr-qc), info:eu-repo/classification/ddc/530, 530, General Relativity and Quantum Cosmology
High Energy Physics - Theory, High Energy Physics - Theory (hep-th), Physics, ddc:530, FOS: Physical sciences, General Relativity and Quantum Cosmology (gr-qc), info:eu-repo/classification/ddc/530, 530, General Relativity and Quantum Cosmology
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