Naslov
Decoupling effects in the running of the Cosmological Constant

Autori
Melic, Blazenka ; Antipin, Oleg

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), ostalo

Izvornik
Proceedings of 2017 European Physical Society Conference on High Energy Physics (EPS-HEP 2017) / Checchia, Paolo et al. - Trst : Sissa Medialab, 2017, 043-048

Skup
European Physical Society Conference on High Energy Physics (EPS-HEP 2017)

Mjesto i datum
Venecija, Italija, 05.07.2018. - 12.07.2018

Vrsta sudjelovanja
Pozvano predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
cosmological constant ; renormalization group running

Sažetak
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.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA