A Dynamical Weak Scale from Inflation
arXiv:1701.09167 · doi:10.1088/1475-7516/2017/09/019
Abstract
Dynamical scanning of the Higgs mass by an axion-like particle during inflation may provide a cosmological component to explaining part of the hierarchy problem. We propose a novel interplay of this cosmological relaxation mechanism with inflation, whereby the backreaction of the Higgs vacuum expectation value near the weak scale causes inflation to end. As Hubble drops, the relaxion's dissipative friction increases relative to Hubble and slows it down enough to be trapped by the barriers of its periodic potential. Such a scenario raises the natural cut-off of the theory up to GeV, while maintaining a minimal relaxion sector without having to introduce additional scanning scalars or new physics coincidentally close to the weak scale.
20 pages, 2 figures. v2: typos and discussion in subsection 3.2 corrected, version accepted for publication in JCAP
Cited by in corpus (15)
- Dynamics of Relaxed Inflation
- Inflating to the Weak Scale
- Higgs relaxation after inflation
- Clockworking FIMPs
- The Hierarchion, a Relaxion Addressing the Standard Model's Hierarchies
- Relaxation of the Composite Higgs Little Hierarchy
- Clockwork for Neutrino Masses and Lepton Flavor Violation
- Cosmological Relaxation through the Dark Axion Portal
- Leptogenesis in Cosmological Relaxation with Particle Production
- Paper-boat relaxion
- Fast-Rolling Relaxion
- Light Higgs Boson from a Pole Attractor
- Hubble selection of the weak scale from QCD quantum critical point
- Gravitational tests of electroweak relaxation
- Mixing Particle Production for Relaxion Mechanism