The Fate of the Universe: Dark Energy Dilution?
arXiv:astro-ph/0701635 · doi:10.1103/PhysRevD.76.027301
Abstract
We study the possibility that dark energy decays in the future and the universe stops accelerating. The fact thatthe cosmological observations prefer an equation of state of dark energy smaller than -1 can be a signal that dark energy will decay in the future. This conclusion is based in interpreting a w<-1 as a signal of dark energy interaction with another fluid. We determine the interaction through the cosmological data and extrapolate it into the future. The resulting energy density for dark energy becomes rho=a^{-3(1+w)}e^{-β(a-1)}, i.e. it has an exponential suppression for a >> a_o=1. In this scenario the universe ends up dominated by this other fluid, which could be matter, and the universe stops accelerating at some time in the near future.
5 pages, 3 figures
References in corpus (5)
- Cosmological Constraints from the SDSS Luminous Red Galaxies
- Cosmological parameters from combining the Lyman-alpha forest with CMB, galaxy clustering and SN constraints
- The SUGRA Quintessence Model Coupled to the MSSM
- Dark Energy and the MSSM
- The impact of neutrino masses on the determination of dark energy properties