Is Cosmic Parity Violation Responsible for the Anomalies in the WMAP Data?

Details Is Cosmic Parity Violation Responsible for the Anomalies in the WMAP Data? Is Cosmic Parity Violation Responsible for the Anomalies in the WMAP Data?

2006-01-06

arxiv.org/abs/hep-th/0601034v3

Phys.Lett.B660:444-448,2008

Physics

High Energy Physics

High Energy Physics - Theory

5 pages, included new references, expanded on some calculations

Scientific paper

10.1016/j.physletb.2007.12.010

This research demonstrates that parity violation in general relativity can simultaneously explain the observed loss in power and alignment at a preferred axis ('Axis of Evil')in the low multipole moments of the WMAP data. This observational possibility also provides an experimental window for an inflationary leptogenesis mechanism arising from large-scale parity violation. A velocity dependent potential is induced from gravitational backreaction, which modifies the primordial scalar angular power spectrum of density perturbations in the CMB. This modification suppresses power of odd parity multipoles on large scales which can be associated with the scale of a massive right-handed neutrino.

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