arXiv:hep-th/0310206·v1·High Energy Physics — Theory
Suppressing CMB Quadrupole with a Bounce from Contracting Phase to Inflation
Yun-Song Piao🇨🇳 · Bo Feng🇨🇳 · Xinmin Zhang🇨🇳
Abstract
Recent released WMAP data show a low value of quadrupole in the CMB temperature fluctuations, which confirms the early observations by COBE. In this paper, a scenario, in which a contracting phase is followed by an inflationary phase, is constructed. We calculate the perturbation spectrum and show that this scenario can provide a reasonable explanation for lower CMB anisotropies on large angular scales.
Comments: 5 pages, 3 figures