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Updated: Jun 13, 2025

Laboratory Drop Towers for the Experimental Simulation of Dust-aggregate Collisions in the Early Solar System
Published on: June 5, 2014
Slowly Expanding Stable Dust Spacetimes
David Fajman1, Maximilian Ofner1, Zoe Wyatt2
1Faculty of Physics, University of Vienna, Boltzmanngasse 5, 1090 Vienna, Austria.
Abstract:
We establish the future nonlinear stability of a large class of FLRW models as solutions to the Einstein-Dust system. We consider the case of a vanishing cosmological constant, which, in particular implies that the expansion rate of the respective models is linear, i.e. has zero acceleration. The resulting spacetimes are future globally regular. These solutions constitute the first generic class of future regular Einstein-Dust spacetimes not undergoing accelerated expansion and are thereby the slowest expanding generic family of future complete Einstein-Dust spacetimes currently known.
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