Ellipsoidal Universe Can Solve The CMB Quadrupole Problem

Details Ellipsoidal Universe Can Solve The CMB Quadrupole Problem Ellipsoidal Universe Can Solve The CMB Quadrupole Problem

2006-06-12

arxiv.org/abs/astro-ph/0606266v2

Phys.Rev.Lett.97:131302,2006; Erratum-ibid.97:209903,2006

Astronomy and Astrophysics

Astrophysics

4 pages, 2 figures, minor changes, reference added, to appear in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.97.131302

The recent three-year WMAP data have confirmed the anomaly concerning the low quadrupole amplitude compared to the best-fit \Lambda CDM prediction. We show that, allowing the large-scale spatial geometry of our universe to be plane-symmetric with eccentricity at decoupling or order 10^{-2}, the quadrupole amplitude can be drastically reduced without affecting higher multipoles of the angular power spectrum of the temperature anisotropy.

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