Year: 2017
Type: article
Abstract: Four-dimensional manifolds with changing signature are obtained by taking the large $N$ limit of fuzzy $C{P}^{2}$ solutions to a Lorentzian matrix model. The regions of Lorentzian signature give toy models of closed universes which exhibit cosmological singularities. These singularities are resolved at finite $N$, as the underlying $C{P}^{2}$ solutions are expressed in terms of finite matrix elements.
Authors: A. Chaney, A. Stern
Institution: University of Alabama
Language: Latvian
Subfield: Statistical and Nonlinear Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2585558014