TH BSM Forum

Domain walls seeding the electroweak phase transition

by Simone Blasi (Vrije Universiteit Brussel)

Europe/Zurich
4/3-006 - TH Conference Room (CERN)

4/3-006 - TH Conference Room

CERN

100
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Description
Topological defects can act as local impurities that seed cosmological phase transitions. We will focus on domain walls and discuss their impact on the electroweak phase transition in the minimal extension of the SM including a scalar singlet (xSM), odd under a Z_2 symmetry. When the transition is two-step, the early breaking of the Z_2 implies the formation of domain walls, which can then act as seeds for the second and final step. The rate of the seeded phase transition can be evaluated within a 3d theory on the domain wall surface, and it is generically faster than the standard homogeneous tunneling. We will comment on the phenomenological implications of this type of transition. 
Videoconference
BSM Forum
Zoom Meeting ID
65562333965
Host
Elena Gianolio
Alternative hosts
Matthew Philip Mccullough, Daniele Teresi, Joachim Kopp, Benoit Loyer, Nicholas Llewellyn Rodd
Passcode
01055539
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