Universe, Volume 7, Issue 2
2021 February - 25 articles
Cover Story: Gravity must obey quantum theory, as do all other interactions. The effects of fluctuations in quantum gravity have important consequences for cosmology. They determine the shape of the effective potential for scalar fields, which in turn are the crucial ingredients for the inflationary universe and for dynamical dark energy. Functional renormalisation permits a quantitative computation of the effects of fluctuations of the metric. If quantum gravity is a complete theory, valid for infinitely short distances, effective scalar potentials become flat for large field values. Inflation and dynamical dark energy arise in a natural way. The same computation also substantiates the successful quantum gravity prediction for the mass of the Higgs boson. View this paper
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Universe - ISSN 2218-1997