Inconsistences in Interacting Agegraphic Dark Energy Models

Abstract

It is found that the origin agegraphic dark energy tracks the matter in the matter-dominated epoch and then the subsequent dark-energy-dominated epoch becomes impossible. It is argued that the difficulty can be removed when the interaction between the agegraphic dark energy and dark matter is considered. In the note, by discussing three different interacting models, we find that the difficulty still stands even in the interacting models. Furthermore, we find that in the interacting models, there exists the other serious inconsistence that the existence of the radiation/matter-dominated epoch contradicts the ability of agegraphic dark energy in driving the accelerated expansion. The contradiction can be avoided in one of the three models if some constraints on the parameters hold.

12 pages, no figure; analysis is added; conclusion is unchanged

References in corpus (11)

• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• Dynamics of dark energy
• A Dark Energy Model Characterized by the Age of the Universe
• A New Model of Agegraphic Dark Energy
• TASI Lectures on the Cosmological Constant
• Interacting Agegraphic Dark Energy
• Challenges for scaling cosmologies
• Interacting Vector-like Dark Energy, the First and Second Cosmological Coincidence Problems
• Interacting Phantom Energy
• Interacting Energy Components and Observational $H(z)$ Data
• Theoretical Limits on Agegraphic Quintessence from Weak Gravity Conjecture

Cited by in corpus (1)

• Agegraphic dark energy from entropy of the anti-de Sitter black hole