Cosmic Quintessence and Primordial Nucleosynthesis

Details Cosmic Quintessence and Primordial Nucleosynthesis Cosmic Quintessence and Primordial Nucleosynthesis

May 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aas...198.2106m&link_type=abstract

American Astronomical Society, 198th AAS Meeting, #21.06; Bulletin of the American Astronomical Society, Vol. 33, p.816

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Scientific paper

Recently attempts have been made to understand the apparent near coincidence of the present vacuum energy and matter energy in terms of a dynamical attractor-like solution for the evolution of a ``quintessence" scalar field. In these models the field couples with the dominant constituent and only acts like a cosmological constant after the onset of the matter dominated epoch. A generic feature of such solutions, however, is the possibility of significant energy density in the scalar field during the radiation dominated epoch. As such, these models can affect, and therefore be constrained by, primordial nucleosynthesis and the epoch of photon decoupling. Here we analyze one popular form for the quintessence field and quantify constraints on the allowed initial conditions and parameters for the effective potential.

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