Quintessential difficulties

doi:10.1016/S0370-2693(99)00657-7

1999-07-01

152

Christopher Kolda

David H. Lyth

DOI：10.1016/S0370-2693(99)00657-7

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En 中文

An alternative to a cosmological constant is quintessence, defined as a slowly-varying scalar field potential V(phi). If quintessence is observationally significant, an epoch of inflation is beginning at the present epoch, with phi the slowly-rolling inflaton field. In contrast with ordinary inflation, quintessence seems to require extreme fine tuning of the potential V(phi). The degree of fine-tuning is quantified in various cases. (C) 1999 Published by Elsevier Science B.V. All rights reserved.

Keyword:

COSMOLOGICAL CONSTANT

GOLDSTONE BOSONS

MODELS