Quintessence and the cosmological constant
classification
🌌 astro-ph
keywords
cosmologicalconstantquintessenceenergybasicconstantsconstitutedark
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Quintessence -- the energy density of a slowly evolving scalar field -- may constitute a dynamical form of the homogeneous dark energy in the universe. We review the basic idea in the light of the cosmological constant problem. Cosmological observations or a time variation of fundamental `constants' can distinguish quintessence from a cosmological constant.
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