TY - JOUR
T1 - Holographic dark energy and cosmic coincidence
AU - Pavón, Diego
AU - Zimdahl, Winfried
PY - 2005/11/10
Y1 - 2005/11/10
N2 - In this Letter we demonstrate that any interaction of pressureless dark matter with holographic dark energy, whose infrared cutoff is set by the Hubble scale, implies a constant ratio of the energy densities of both components thus solving the coincidence problem. The equation of state parameter is obtained as a function of the interaction strength. For a variable degree of saturation of the holographic bound the energy density ratio becomes time dependent which is compatible with a transition from decelerated to accelerated expansion. © 2005 Elsevier B.V. All rights reserved.
AB - In this Letter we demonstrate that any interaction of pressureless dark matter with holographic dark energy, whose infrared cutoff is set by the Hubble scale, implies a constant ratio of the energy densities of both components thus solving the coincidence problem. The equation of state parameter is obtained as a function of the interaction strength. For a variable degree of saturation of the holographic bound the energy density ratio becomes time dependent which is compatible with a transition from decelerated to accelerated expansion. © 2005 Elsevier B.V. All rights reserved.
U2 - https://doi.org/10.1016/j.physletb.2005.08.134
DO - https://doi.org/10.1016/j.physletb.2005.08.134
M3 - Article
SN - 0370-2693
VL - 628
SP - 206
EP - 210
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
ER -