Holographic dark energy and cosmic coincidence

Diego Pavón, Winfried Zimdahl

Research output: Contribution to journalArticleResearchpeer-review

500 Citations (Scopus)


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
Publication statusPublished - 10 Nov 2005


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