The cosmological constant and scale hierarchies with emergent gauge symmetries

Abstract

Motivated by the stability of the electroweak Higgs vacuum we consider the possibility that the Standard Model might work up to large scales between about $10^{10}$ GeV and close to the Planck scale. A plausible scenario is an emergent Standard Model with gauge symmetries originating in some topological like phase transition deep in the ultraviolet. In this case the cosmological constant scale and neutrino masses should be of similar size, suppressed by factor of the large scale of emergence. The key physics involves a subtle interplay of Poincaré invariance, mass generation and renormalisation group invariance. The Higgs mass would be environmentally selected in connection with vacuum stability. Consequences for dark matter scenarios are discussed.

21 pages, Contribution to "The Particle-Gravity Frontier" theme issue in Philosophical Transactions of the Royal Society A, based on the 2022 Humboldt Kolleg in Kitzbühel

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