Does the Low CMB Quadrupole Provide a New Cosmic Coincidence Problem ?

Details Does the Low CMB Quadrupole Provide a New Cosmic Coincidence Problem ? Does the Low CMB Quadrupole Provide a New Cosmic Coincidence Problem ?

2004-03-20

arxiv.org/abs/hep-ph/0403222v1

Matters of Gravity, No.23,2004

Physics

High Energy Physics

High Energy Physics - Phenomenology

3 pages, 1 fig. Expanded version of the report written for 'Matters of Gravity' journal, Spring 2004 issue. Title changed

Scientific paper

We point out that the recent WMAP findings of a suppressed large scale power in the Cosmic Microwave Background anisotropy power spectrum, if of cosmological origin, make the case for a new cosmic coincidence problem.The observed suppression of anisotropies at large angles requires an explanation for why this suppression is occuring {\it only} for perturbation wavelengths of the order of our present Hubble horizon. This is a very challenging task since a consistent model for the emerging picture of the universe has to address any cosmic coincidence and thus may reveal a deeper inter-relation with the dark energy problem.

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