Dark Energy: A Unifying View
General Relativity and Quantum Cosmology
2008-11-26 v1 Astrophysics
High Energy Physics - Theory
Abstract
Different models of the cosmic substratum which pretend to describe the present stage of accelerated expansion of the Universe like the CDM model or a Chaplygin gas, can be seen as special realizations of a holographic dark energy cosmology if the option of an interaction between pressurless dark matter and dark energy is taken seriously. The corresponding interaction strength parameter plays the role of a cosmological constant. Differences occur at the perturbative level. In particular, the pressure perturbations are intrinsically non-adiabatic.
Keywords
Cite
@article{arxiv.0705.2131,
title = {Dark Energy: A Unifying View},
author = {Winfried Zimdahl},
journal= {arXiv preprint arXiv:0705.2131},
year = {2008}
}