Conveners
Cosmological Selection of Vacuum
- Aldo Deandrea (IP2I - Université Lyon 1)
Cosmological Selection of Vacuum
- Giacomo Cacciapaglia (LPTHE)
Cosmological Selection of Vacuum
- Giacomo Cacciapaglia (LPTHE)
In this talk, I re-visit the original relaxion model by Graham-Kaplan-Rajendran in the regime where the relaxion is subject to large fluctuations during its dynamics. I discuss the modified stopping conditions for such dynamics of the relaxion and the new parameter space. Interestingly, in a significant region of the parameter space, the relaxion can naturally account for the observed dark...
Self-organised criticality, realised through cosmological dynamics in the early universe, is an alternative paradigm for addressing the electroweak hierarchy problem. In this scenario, an unnaturally light Higgs boson is the result of dynamics driving the electroweak vacuum towards a near-critical metastable point where the Higgs mass is bounded from above by the vacuum instability scale. To...
