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arXiv · 1702.04068

Electroweak monopoles and the electroweak phase transition

Suntharan Arunasalam·Archil Kobakhidze
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Abstract

We consider an isolated electroweak monopole solution within the Standard Model with a non-linear Born-Infeld extension of the hypercharge gauge field. Monopole (and dyon) solutions in such an extension are regular and their masses are predicted to be proportional to the Born-Infeld mass parameter. We argue that cosmological production of electroweak monopoles may delay the electroweak phase transition and make it more strongly first order for monopole masses $M\gtrsim 9.3\cdot 10^3$ TeV, while the nucleosynthesis constraints on the abundance of relic monopoles impose the bound $M\lesssim 2.3\cdot 10^4$ TeV. The monopoles with a mass in this shallow range may be responsible for the dynamical generation of the matter-antimatter asymmetry during the electroweak phase transition.

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Suntharan Arunasalam, Archil Kobakhidze. 2017-02-14. Electroweak monopoles and the electroweak phase transition. https://doi.org/10.1140/epjc%2Fs10052-017-4999-y

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