Cosmological Relaxation of the Electroweak Scale

Phys Rev Lett. 2015 Nov 27;115(22):221801. doi: 10.1103/PhysRevLett.115.221801. Epub 2015 Nov 23.

Abstract

A new class of solutions to the electroweak hierarchy problem is presented that does not require either weak-scale dynamics or anthropics. Dynamical evolution during the early Universe drives the Higgs boson mass to a value much smaller than the cutoff. The simplest model has the particle content of the standard model plus a QCD axion and an inflation sector. The highest cutoff achieved in any technically natural model is 10^{8} GeV.