2019/11/06 by S. Modares Vamegh, S. Al. Modares Vamegh, M. Haghighat +3
Chemistry · Physics and Astronomy · #Anisotropy #Astrophysics #Atomic physics #Chemistry #Cosmic microwave background #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark matter #Particle physics #Particle physics theoretical and experimental studies #Photon #Physics #Polarization (electrochemistry) #Quadrupole #Quantum mechanics #Spectral density #hep-ph #hep-th
paper · pdf · doi:10.1103/physrevd.100.103024
40 pages, 7 figures, Accepted for publication in Physical Review D
arxiv created 2019/11/06 · openalex created_date 2019/11/22 · openalex publication_date 2019/11/26 · arxiv updated 2020/01/08 · openalex updated_date 2026/08/05
We consider a vector dark matter (VDM) with a direct coupling with photon. We examine the effect of such an interaction on the CMB polarization to put new constrains on the properties of the DM particles. We show that a partially polarized VDM of the order of temperature fluctuation with a quadrupole distribution leads to a valuable circular polarization (CP) for the CMB. In different DM-models the DM-masses range from few eV to a few TeV. We show that the CP angular power spectrum depends on the mass of VDM as CVl(S)\ensuremath∝1/mV6 such that for mV=10 eV--1 keV, the CP angular power spectrum is CVl(S)\ensuremath≃103--10^\ensuremath-11 nK2. Therefore, the light VDM with masses less than 10 eV leads to an unexpected very large CP which can be excluded from the acceptable range of the VDM masses.