2011/07/11 by Alexandre Payez, A. Payez, J. R. Cudell +2 · 37 citations
Physics and Astronomy · #Axion #Circular polarization #Classical mechanics #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark matter #Formalism (music) #Galaxies: Formation, Evolution, Phenomena #Galaxy #Magnetic field #Particle physics #Physics #Polarization (electrochemistry) #Quantum mechanics #Quasar #Theoretical physics #astro-ph.CO #hep-ph
paper · pdf · doi:10.1103/physrevd.84.085029
published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 84(8) (American Physical Society) · Submitted to Physical Review D; for high-resolution figures, see http://hdl.handle.net/2268/95422
arxiv created 2011/07/11 · openalex publication_date 2011/10/25 · arxiv updated 2015/03/12 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The standard axionlike particle explanation of the observed large-scale coherent orientations of quasar polarization vectors is ruled out by the recent measurements of vanishing circular polarization. We introduce a more general wave-packet formalism and show that, although decoherence effects between waves of different frequencies can reduce significantly the amount of circular polarization, the axionlike particle hypothesis is disfavored given the bandwidth with which part of the observations were performed. Finally, we show that a more sophisticated model of extragalactic fields does not lead to an alignment of polarizations.