The Revival of the unified dark energy - dark matter model?

Jul, 2004
6 pages
Published in:
  • Phys.Rev.D 70 (2004) 083519
e-Print:
Report number:
  • DF-IST-6-2004

Citations per year

200420092014201920240510152025
Abstract: (arXiv)
We consider the generalized Chaplygin gas (GCG) proposal for unification of dark energy and dark matter and show that it admits an unique decomposition into dark energy and dark matter components once phantom-like dark energy is excluded. Within this framework, we study structure formation and show that difficulties associated to unphysical oscillations or blow-up in the matter power spectrum can be circumvented. Furthermore, we show that the dominance of dark energy is related to the time when energy density fluctuations start deviating from the linear δa\delta \sim a behaviour.
  • 98.80.Cq
  • dark energy
  • dark matter
  • gas: Chaplygin