Identifying Riemannian Singularities with Regular Non-Riemannian Geometry
| Autor: | Miok Park, Jeong-Hyuck Park, Kevin Morand |
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| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Physical Review Letters |
| Popis: | Admitting non-Riemannian geometries, Double Field Theory extends the notion of spacetime beyond the Riemannian paradigm. We identify a class of singular spacetimes known in General Relativity with regular non-Riemannian geometries. The former divergences merely correspond to coordinate singularities of the generalised metric for the latter. Computed in string frame, they feature an impenetrable non-Riemannian sphere outside of which geodesics are complete with no singular deviation. Approaching the non-Riemannian points, particles freeze and strings become (anti-)chiral. v2) 7 pages, title modified, references added, redaction improved, example D relegated to Supplemental Material. To appear in Physical Review Letters |
| Databáze: | OpenAIRE |
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