Statefinder diagnostic for cosmology with the abnormally weighting energy hypothesis

2007/11/30 by Dao-Jun Liu, Weizhong Liu, Wei-Zhong Liu
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Galaxies: Formation, Evolution, Phenomena #astro-ph

paper · pdf · doi:10.1103/physrevd.77.027301

published as Phys.Rev.D77:027301,2008 · 5 pages, 4 figures, accepted by PRD

arxiv created 2007/11/30 · openalex publication_date 2008/01/08 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

In this paper, we apply the statefinder diagnostic to the cosmology with the abnormally weighting energy hypothesis (AWE cosmology), in which dark energy in the observational (ordinary matter) frame results from the violation of the weak equivalence principle by pressureless matter. It is found that there exist closed loops in the statefinder plane, which is an interesting characteristic of the evolution trajectories of statefinder parameters and can be used to distinguish AWE cosmology from other cosmological models.

Citations

• Cosmological Constant - the Weight of the Vacuum
• Statefinder -- a new geometrical diagnostic of dark energy
• Dark Energy as a Born-Infeld Gauge Interaction Violating the Equivalence Principle
• Dynamics of dark energy
• Is cosmic speed-up due to new gravitational physics?
• The Case for a Positive Cosmological Lambda-term