2006/01/31 by Stephon Alexander, Stephon H. S. Alexander · 1 citation
Physics and Astronomy · #Anisotropy #Astrophysics #CMB cold spot #COSMIC cancer database #Cosmic background radiation #Cosmic microwave background #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Leptogenesis #Lepton #Multipole expansion #Neutrino #Nuclear physics #Parity (physics) #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum mechanics #R-parity #Theoretical physics #astro-ph #hep-th
paper · pdf · doi:10.1016/j.physletb.2007.12.010
published as Phys.Lett.B660:444-448,2008 · 5 pages, included new references, expanded on some calculations
arxiv created 2006/08/04 · openalex publication_date 2007/12/28 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
In this Letter, I argue that a parity violating extension to general relativity can simultaneously explain the observed loss in power and provides a first step for explaining the 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. Similar to the arguments of Contaldi, Peloso, Kofman and Linde, large scale power is suppressed from the backreaction of the parity violating term by inducing a velocity dependent potential. We also argue that this modification can supress power of odd parity multipoles on large scales, a pattern that is observed in the WMAP alignment anomaly.