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Stabilization of semilocal strings by dark scalar condensates

Abstract : Semilocal and electroweak strings are well known to be unstable against unwinding by the condensation of the second Higgs component in their cores. A large class of current models of dark matter contains dark scalar fields coupled to the Higgs sector of the Standard Model (Higgs portal) and/or dark U(1) gauge fields. It is shown that Higgs-portal-type couplings and a gauge kinetic mixing term of the dark U(1) gauge field have a significant stabilizing effect on semilocal strings in the “visible” sector.
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Submitted on : Monday, July 3, 2017 - 5:57:47 PM
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Péter Forgács, Árpád Lukács. Stabilization of semilocal strings by dark scalar condensates. Physical Review D, American Physical Society, 2017, 95 (3), pp.035003. ⟨10.1103/PhysRevD.95.035003⟩. ⟨hal-01554470⟩



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