Astronomy and Astrophysics – Astrophysics – Cosmology and Extragalactic Astrophysics
Scientific paper
2011-06-10
Astronomy and Astrophysics
Astrophysics
Cosmology and Extragalactic Astrophysics
17 pages, 1 table, 10 figures; MNRAS in press
Scientific paper
Growing Neutrino quintessence describes a form of dynamical dark energy that could explain why dark energy dominates the universe only in recent cosmological times. This scenario predicts the formation of large scale neutrino lumps which could allow for observational tests. We perform for the first time N-body simulations of the nonlinear growth of structures for cold dark matter and neutrino fluids in the context of Growing Neutrino cosmologies. Our analysis shows a pulsation - increase and subsequent decrease - of the neutrino density contrast. This could lead to interesting observational signatures, as an enhanced bulk flow in a situation where the dark matter density contrast only differs very mildly from the standard LCDM scenario. We also determine for the first time the statistical distribution of neutrino lumps as a function of mass at different redshifts. Such determination provides an essential ingredient for a realistic estimate of the observational signatures of Growing Neutrino cosmologies. Due to a breakdown of the non-relativistic Newtonian approximation our results are limited to redshifts z > 1.
Amendola Luca
Baldi Marco
Pettorino Valeria
Wetterich Christof
No associations
LandOfFree
Oscillating nonlinear large scale structure in growing neutrino quintessence does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Oscillating nonlinear large scale structure in growing neutrino quintessence, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Oscillating nonlinear large scale structure in growing neutrino quintessence will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-413434