期刊
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
卷 -, 期 6, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1475-7516/2007/06/020
关键词
dark energy theory; cosmological perturbation theory
DM-DE coupling can be a phenomenological indication of a common origin of the dark cosmic components. In this work we outline a new constraint to coupled-DE models: the coupling can partially or totally suppress the Meszaros effect, yielding transferred spectra with quite a soft bending above k(hor),(eq). Models affected by this anomaly do not show major variation in the CMB anisotropy spectrum and it is therefore hard to reconcile them with both CMB and deep sample data, through the same value of the primeval spectral index.
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