Domain walls as dark energy

Alexander Friedland, Hitoshi Murayama, and Maxim Perelstein
Phys. Rev. D 67, 043519 – Published 28 February 2003
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Abstract

The possibility that the energy density of the Universe is dominated by a network of low-tension domain walls provides an alternative to the commonly discussed cosmological constant and scalar-field quintessence models of dark energy. We quantify the lower bound on the number density of the domain walls that follows from the observed near isotropy of the cosmic microwave background radiation. This bound can be satisfied by a strongly frustrated domain wall network. No fine tuning of the parameters of the underlying field theory model is required. We briefly outline the observational consequences of this model.

  • Received 7 June 2002

DOI:https://doi.org/10.1103/PhysRevD.67.043519

©2003 American Physical Society

Authors & Affiliations

Alexander Friedland

  • School of Natural Sciences, Institute for Advanced Study, Einstein Drive, Princeton, New Jersey 08540

Hitoshi Murayama

  • Department of Physics, University of California, Berkeley, California 94720
  • Theory Group, Lawrence Berkeley National Laboratory, Berkeley, California 94720

Maxim Perelstein

  • Theory Group, Lawrence Berkeley National Laboratory, Berkeley, California 94720

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Vol. 67, Iss. 4 — 15 February 2003

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