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Unification of Dark Energy and Dark Matter

Fuminobu Takahashi, T. T. Yanagida

hep-pharXiv:hep-ph/0512296

Abstract

We propose a scenario in which dark energy and dark matter are described in a unified manner. The ultralight pseudo-Nambu-Goldstone (pNG) boson, A, naturally explains the observed magnitude of dark energy, while the bosonic supersymmetry partner of the pNG boson, B, can be a dominant component of dark matter. The decay of B into a pair of electron and positron may explain the 511 keV gamma ray from the Galactic Center.

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