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25 April 2024 |
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Early Quintessence and the CMB | | Christian M Mueller
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15 Oct 2003 | | Subject: | astro-ph | | Abstract: | We examine the cosmic microwave background (CMB) anisotropy for signatures of early quintessence dark energy -- a non-negligible quintessence energy density during the recombination and structure formation eras. In contrast to a $Lambda$CDM cosmology, early quintessence leads to a larger suppression of structure growth. Because of this influence on the clustering of dark matter and the baryon-photon fluid, we may expect to find trace signals in the CMB and the mass fluctuation power spectrum. In detail, we demonstrate that suppressed clustering power on small length-scales, as suggested by the combined Wilkinson Microwave Anisotropy Probe (WMAP) / CMB / large scale structure data set, is characteristic of early quintessence. | | Source: | arXiv, astro-ph/0310412 | | Services: | Forum | Review | PDF | Favorites | |
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