On the emergence of an expanding universe from a Lorentzian matrix model
arXiv:1912.12229
Abstract
We present evidence that recent numerical results from the reduced classical equations of the Lorentzian IIB matrix model can be interpreted as corresponding to the emergence of an expanding universe. In addition, we propose an effective metric to describe the emerging (3+1)-dimensional spacetime. This metric gives, at all times, finite values for the Ricci and Kretschmann curvature scalars. With these results, we are able to give a heuristic discussion of the origin of the Universe in the context of the IIB matrix model.
18 pages, 7 figures, v7: published version without App. B
References in corpus (6)
- Complex Langevin analysis of the space-time structure in the Lorentzian type IIB matrix model
- Regularized big bang singularity
- More on the regularized big bang singularity
- Nonsingular bouncing cosmology from general relativity: Scalar metric perturbations
- IIB matrix model: Extracting the spacetime points
- IIB matrix model: Extracting the spacetime metric