Occam's razor meets WMAP

Details Occam's razor meets WMAP Occam's razor meets WMAP

2006-04-19

arxiv.org/abs/astro-ph/0604410v1

Mon.Not.Roy.Astron.Soc.Lett.377:L39-L43,2007

Astronomy and Astrophysics

Astrophysics

Scientific paper

10.1111/j.1745-3933.2007.00299.x

Using a variety of quantitative implementations of Occam's razor we examine the low quadrupole, the ``axis of evil'' effect and other detections recently made appealing to the excellent WMAP data. We find that some razors {\it fully} demolish the much lauded claims for departures from scale-invariance. They all reduce to pathetic levels the evidence for a low quadrupole (or any other low $\ell$ cut-off), both in the first and third year WMAP releases. The ``axis of evil'' effect is the only anomaly examined here that survives the humiliations of Occam's razor, and even then in the category of ``strong'' rather than ``decisive'' evidence. Statistical considerations aside, differences between the various renditions of the datasets remain worrying.

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