Standard Model with Cosmologically Broken Quantum Scale Invariance

Details Standard Model with Cosmologically Broken Quantum Scale Invariance Standard Model with Cosmologically Broken Quantum Scale Invariance

2009-03-10

arxiv.org/abs/0903.1683v2

Mod.Phys.Lett.A25:167-177,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, no figures significant revisions, no change in results or conclusions

Scientific paper

10.1142/S0217732310032317

We argue that scale invariance is not anomalous in quantum field theory, provided it is broken cosmologically. We consider a locally scale invariant extension of the Standard Model of particle physics and argue that it fits both the particle and cosmological observations. The model is scale invariant both classically and quantum mechanically. The scale invariance is broken cosmologically producing all the dimensionful parameters. The cosmological constant or dark energy is a prediction of the theory and can be calculated systematically order by order in perturbation theory. It is expected to be finite at all orders. The model does not suffer from the hierarchy problem due to absence of scalar particles, including the Higgs, from the physical spectrum.

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