APEC Seminar (Astronomy - Particle Physics - Experimental Physics - Cosmology)

Speaker: Tevong You (CERN and Cambridge)
Title: Self-Organised Localisation
Date (JST): Thu, Sep 16, 2021, 16:00 - 17:00
Place: Zoom
Abstract: We describe a new phenomenon in quantum cosmology: self-organised localisation. When the fundamental parameters of a theory are functions of a scalar field subject to large fluctuations during inflation, quantum phase transitions can act as dynamical attractors. As a result, the theory parameters are probabilistically localised around the critical value and the Universe finds itself at the edge of a phase transition. We illustrate how self-organised localisation could account for the observed near-criticality of the Higgs self-coupling, the naturalness of the Higgs mass, or the smallness of the cosmological constant.