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The cosmological Higgstory of the vacuum instability

Espinosa, José
Giudice, Gian
Senatore, Leonardo
Strumia, Alessandro
Tetradis, Nikolaos
Published in The journal of high energy physics. 2015, vol. 1509, p. 174-230
Collection Open Access - SCOAP3
Abstract The Standard Model Higgs potential becomes unstable at large field values. After clarifying the issue of gauge dependence of the effective potential, we study the cosmological evolution of the Higgs field in presence of this instability throughout inflation, reheating and the present epoch. We conclude that anti-de Sitter patches in which the Higgs field lies at its true vacuum are lethal for our universe. From this result, we derive upper bounds on the Hubble constant during inflation, which depend on the reheating temperature and on the Higgs coupling to the scalar curvature or to the inflaton. Finally we study how a speculative link between Higgs meta-stability and consistence of quantum gravity leads to a sharp prediction for the Higgs and top masses, which is consistent with measured values.
Keywords Higgs PhysicsStandard Model
arXiv: 1505.04825
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ESPINOSA, José et al. The cosmological Higgstory of the vacuum instability. In: The journal of high energy physics, 2015, vol. 1509, p. 174-230. doi: 10.1007/JHEP09(2015)174 https://archive-ouverte.unige.ch/unige:75552

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Deposited on : 2015-10-01

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