Fast Electroweak Symmetry Breaking and Cold Electroweak Baryogenesis
Kari Enqvist, Philip Stephens, Olli Taanila, Anders Tranberg
TL;DR
This paper proposes a model where electroweak symmetry breaking occurs rapidly in a cold universe, enabling baryogenesis without altering established electroweak physics.
Contribution
It introduces a novel delayed and fast electroweak symmetry breaking mechanism via coupling the Higgs to an extra scalar field, facilitating cold baryogenesis.
Findings
Fast quench transition is achievable in the model.
The model supports successful Cold Electroweak Baryogenesis.
Known electroweak physics remains unaffected.
Abstract
We construct a model for delayed electroweak symmetry breaking that takes place in a cold Universe with T<<100 GeV and which proceeds by a fast quench rather than by a conventional, slow, phase transition. This is achieved by coupling the Standard Model Higgs to an additional scalar field. We show that the quench transition can be made fast enough for successful Cold Electroweak Baryogenesis, while leaving known electroweak physics unchanged.
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