Holographic dark energy and cosmic coincidence

Diego Pavón, Winfried Zimdahl

Research output: Contribution to journalArticleResearchpeer-review

418 Citations (Scopus)

Abstract

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.
Original languageEnglish
Pages (from-to)206-210
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume628
DOIs
Publication statusPublished - 10 Nov 2005

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