Bubble nucleation is a key feature in a cosmological first-order phase transition. The non-equilibrium bubble dynamics and the properties of the transition are controlled by the density perturbations in the hot plasma. We present, for the first time, the full solution of the linearized Boltzmann equation. Our approach, differently from the traditional one based on the fluid approximation, does not rely on any ansatz. We focus on the contributions arising from the top quark species coupled to the Higgs field during a first-order electroweak phase transition. Our results significantly differ from the ones obtained in the fluid approximation with sizeable differences for the friction acting on the bubble wall.
Bubble wall dynamics at the electroweak scale / De Curtis S.; Delle Rose L.; Guiggiani A.; Muyor A.G.; Panico G.. - In: POS PROCEEDINGS OF SCIENCE. - ISSN 1824-8039. - ELETTRONICO. - 414:(2022), pp. 0-0. (Intervento presentato al convegno 41st International Conference on High Energy Physics, ICHEP 2022 tenutosi a ita nel 2022).
Bubble wall dynamics at the electroweak scale
De Curtis S.;Delle Rose L.;Guiggiani A.;Panico G.
2022
Abstract
Bubble nucleation is a key feature in a cosmological first-order phase transition. The non-equilibrium bubble dynamics and the properties of the transition are controlled by the density perturbations in the hot plasma. We present, for the first time, the full solution of the linearized Boltzmann equation. Our approach, differently from the traditional one based on the fluid approximation, does not rely on any ansatz. We focus on the contributions arising from the top quark species coupled to the Higgs field during a first-order electroweak phase transition. Our results significantly differ from the ones obtained in the fluid approximation with sizeable differences for the friction acting on the bubble wall.
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