Solving the Coincidence Problem: Tracking Oscillating Energy

Scott Dodelson, Manoj Kaplinghat, and Ewan Stewart
Phys. Rev. Lett. 85, 5276 – Published 18 December 2000
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Abstract

Recent cosmological observations strongly suggest that the Universe is dominated by an unknown form of energy with negative pressure. Why is this dark energy density of order the critical density today? We propose that the dark energy has periodically dominated in the past so that its preponderance today is natural. We illustrate this paradigm with a model potential and show that its predictions are consistent with all observations.

  • Received 24 February 2000

DOI:https://doi.org/10.1103/PhysRevLett.85.5276

©2000 American Physical Society

Authors & Affiliations

Scott Dodelson1,2, Manoj Kaplinghat2, and Ewan Stewart1,3

  • 1NASA/Fermilab Astrophysics Center, Fermi National Accelerator Laboratory, Batavia, Illinois 60510-0500
  • 2Department of Astronomy & Astrophysics, Enrico Fermi Institute, The University of Chicago, Chicago, Illinois 60637-1433
  • 3Department of Physics, KAIST, Taejon 305-701, South Korea

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Vol. 85, Iss. 25 — 18 December 2000

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