Decoupling effects in the running of the Cosmological Constant (CROSBI ID 678666)
Prilog sa skupa u zborniku | ostalo | međunarodna recenzija
Podaci o odgovornosti
Melic, Blazenka ; Antipin, Oleg
engleski
Decoupling effects in the running of the Cosmological Constant
We study the decoupling effects associated with heavy particles in the renormalization group running of the vacuum energy in a mass-dependent renormalization scheme. We find the running of the vacuum energy stemming from the Higgs condensate in the entire energy range and show that it behaves as expected from the simple dimensional arguments meaning that it exhibits the quadratic sensitivity to the mass of the heavy particles in the infrared regime. The consequence of such a running to the fine-tuning problem with the measured value of the Cosmological Constant is analyzed and the constraint on the mass spectrum of a given model is derived. This finetuning constraint is not satisfied in the Standard Model (SM) while in the massless theories it formally coincides with the well known Veltman condition. We also provide a remarkably simple extension of the SM where saturation of this constraint enables us to predict the radiative Higgs mass correctly. Generalization to constant curvature spaces is also given.
cosmological constant ; renormalization group running
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Podaci o prilogu
043-048.
2017.
objavljeno
10.22323/1.314.0043
Podaci o matičnoj publikaciji
Proceedings of 2017 European Physical Society Conference on High Energy Physics (EPS-HEP 2017)
Checchia, Paolo et al.
Trst: Sissa Medialab
Podaci o skupu
European Physical Society Conference on High Energy Physics (EPS- HEP-2017)
pozvano predavanje
05.07.2017-12.07.2017
Venecija, Italija