Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2007-09-18
Phys.Rev.D77:035006,2008
Physics
High Energy Physics
High Energy Physics - Phenomenology
10 pages
Scientific paper
10.1103/PhysRevD.77.035006
If scale invariance is a classical symmetry then both the Planck scale and the weak scale should emerge as quantum effects. We show that this can be realized in simple scale invariant theories with a hidden sector. The weak/Planck scale hierarchy emerges in the (technically natural) limit where the hidden sector decouples from the ordinary sector. The weak scale is protected from quadratic divergences because of classical scale invariance, so there is no hierarchy problem.
Foot Robert
Kobakhidze Archil
McDonald Kristian L.
Volkas Raymond R.
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