A closed, expanding universe in string theory
| Autor: | Chiara R. Nappi, Edward Witten |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
High Energy Physics - Theory
Physics Nuclear and High Energy Physics Conformal field theory Cosmic censorship hypothesis media_common.quotation_subject FOS: Physical sciences Naked singularity String theory Physics::History of Physics Universe Metric expansion of space High Energy Physics::Theory General Relativity and Quantum Cosmology Theoretical physics High Energy Physics - Theory (hep-th) Minkowski space media_common |
| Zdroj: | Physics Letters B. 293:309-314 |
| ISSN: | 0370-2693 |
| DOI: | 10.1016/0370-2693(92)90888-b |
| Popis: | We present a conformal field theory -- obtained from a gauged WZW model -- that describes a closed, inhomogeneous expanding and recollapsing universe in $3+1$ dimensions. A possible violation of cosmic censorship is avoided because the universe recollapses just when a naked singularity was about to form. The model has been chosen to have $c=4$ (or $\widehat c=4$ in the supersymmetric case), just like four dimensional Minkowski space. Comment: 10 pp |
| Databáze: | OpenAIRE |
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