Dark matter, neutron stars and strange quark matter
arXiv:1007.1421 · doi:10.1103/PhysRevLett.105.141101
Abstract
We show that self-annihilating neutralino WIMP dark matter accreted onto neutron stars may provide a mechanism to seed compact objects with long-lived lumps of strange quark matter, or strangelets, for WIMP masses above a few GeV. This effect may trigger a conversion of most of the star into a strange star. We use an energy estimate for the long-lived strangelet based on the Fermi gas model combined with the MIT bag model to set a new limit on the possible values of the WIMP mass that can be especially relevant for subdominant species of massive neutralinos.
5 pages, 2 figures, accepted for publication in Phys. Rev. Lett
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