Dynamics of an interacting dark energy model in Einstein and loop quantum cosmology

2008/08/31 by Songbai Chen, Bin Wang, Jiliang Jing · 3 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Noncommutative and Quantum Gravity Theories #gr-qc

paper · pdf · doi:10.1103/physrevd.78.123503

published as Phys.Rev.D78:123503,2008 · 16 pages, 4 figures, references added, accepted by Phys. Rev. D

arxiv created 2008/11/10 · openalex publication_date 2008/12/02 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We investigate the background dynamics when dark energy is coupled to dark matter in the Universe described by Einstein cosmology and loop quantum cosmology. We introduce a new general form of dark sector coupling, which presents a more complicated dynamical phase space. Differences in the phase space in obtaining the accelerated scaling attractor in Einstein cosmology and loop quantum cosmology are disclosed.

Citations

• A qualitative approach to semi-classical loop quantum cosmology
• Cosmological Constant - the Weight of the Vacuum
• Dark energy–dark matter interaction and putative violation of the equivalence principle from the Abell cluster A586
• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Slow-roll suppression of adiabatic instabilities in coupled scalar field-dark matter models
• Structure formation in inhomogeneous dark energy models

Cited by

• Inverse volume corrections to emergent tachyonic inflation in loop quantum cosmology
• General dissipative coefficient in warm intermediate inflation in Loop Quantum Cosmology in light of Planck and BICEP2
• Breaking parameter degeneracy in interacting dark energy models from observations