Self Interacting Dark Matter in the Solar System
Abstract
Weakly coupled, almost massless, spin 0 particles have been predicted by many extensions of the standard model of particle physics. Recently, the PVLAS group observed a rotation of polarization of electromagnetic waves in vacuum in the presence of transverse magnetic field. This phenomenon is best explained by the existence of a weakly coupled light pseudoscalar particle. However, the coupling required by this experiment is much larger than the conventional astrophysical limits. Here we consider a hypothetical self-interacting pseudoscalar particle which couples weakly with visible matter. Assuming that these pseudoscalars pervade the galaxy, we show that the solar limits on the pseudoscalar-photon coupling can be evaded.
Cite
@article{arxiv.hep-ph/0611006,
title = {Self Interacting Dark Matter in the Solar System},
author = {Avijit K. Ganguly and Pankaj Jain and Subhayan Mandal and Sarah Stokes},
journal= {arXiv preprint arXiv:hep-ph/0611006},
year = {2008}
}
Comments
17 pages, 2 figures