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Scalar field dark matter
In astrophysics and cosmology scalar field dark matter is a classical, minimally coupled, real scalar field postulated to account for the inferred dark matter.
==Background==
The universe may be accelerating, fueled perhaps by a cosmological constant or some
other field possessing long range ‘repulsive’ effects. A model must predict the correct form for
the large scale clustering spectrum,〔Galaxies are not scattered about the universe in a random way, but rather form an intricate network of filaments, sheets, and clusters. How these large-scale structures formed is at the root of many key questions in cosmology.〕 account for cosmic microwave background anisotropies on large and intermediate angular scales, and provide agreement with the luminosity distance relation obtained from observations of high redshift supernovae. The modeled evolution of the universe includes a large amount of unknown matter in order to agree with such observations. This matter has two components cold dark matter and dark energy. Each contributes to the theory of the origination of galaxies and the expansion of the universe. The universe must have a critical density, a density not explained by baryonic matter (ordinary matter) alone.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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