Electroweak relaxation from finite temperature

• DOI: 10.1007/jhep11(2015)077
• Publication Date: 2015-11-15T22:48:06Z
• Authors: Edward Hardy
• Keywords: Hidden sector; Electroweak scale

We study theories which naturally select a vacuum with parametrically small Electroweak Scale due to finite temperature effects in the early universe. In particular, there is scalar an approximate shift symmetry broken by technically natural coupling Higgs, and dependent potential. As of universe drops, follows minimum its potential altering Higgs mass squared parameter. The also has periodic amplitude proportional expectation value, traps it Scale. required dependence can occur through strong hidden sector that are suppressed at high temperatures. Alternatively, be generated perturbatively from one-loop thermal both cases, for displaced, must reheated temperatures significantly higher than visible sector. However this does not violate observational constraints provided energy density transferred without disrupting big bang nucleosynthesis. how mechanism implemented when completed Minimal Supersymmetric Standard Model scale. Models UV cutoff 10 TeV no fields taking values over range greater 1012 GeV possible, although have order 108 times effective decay constant part