It is shown, in the context of general relativity, how to modify any cosmological model so that its local (in time) properties are unchanged, but its global time evolution is isochronous, i. e. completely periodic with a fixed period independent of the initial data. In this manner the Big Bang singularity might be avoided, even if this singularity is featured by the original model.
Isochronous spacetimes and cosmologies
Briscese F.;
2015
Abstract
It is shown, in the context of general relativity, how to modify any cosmological model so that its local (in time) properties are unchanged, but its global time evolution is isochronous, i. e. completely periodic with a fixed period independent of the initial data. In this manner the Big Bang singularity might be avoided, even if this singularity is featured by the original model.File in questo prodotto:
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