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Abstract: Kibble mechanism drastically underestimates the production of topologicaldefects, as confirmed recently in atomic and condensed matter systems.
Ifnon-thermally produced, they can be cosmological dark matter of mass 1-10 PeV.If thermalized, skyrmion of mass 1-10 TeV is also a viable dark mattercandidate, whose decay may explain $e^\pm$ spectra in cosmic rays recentlymeasured by PAMELA, FERMI, and HESS.
Models that produce magnetic monopolesbelow the inflation scale, such as Pati-Salam unification, are excluded.



Autor: Hitoshi Murayama, Jing Shu

Fuente: https://arxiv.org/



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