Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/6824
Title: Softly fine-tuned standard model and the scale of inflation
Authors: Korutlu, Beste
Keywords: Inflationary scale
UV cutoff
Higgs-curvature coupling
Fine-tuning scheme
Issue Date: Nov-2015
Publisher: World Scientific Publishing Co. Pte Ltd
Source: Korutlu, B. (2015). Softly fine-tuned Standard Model and the scale of inflation. Modern Physics Letters A, 30(34). doi:10.1142/S0217732315501795
Abstract: The direct coupling between the Higgs field and the spacetime curvature, if finely tuned, is known to stabilize the Higgs boson mass. The fine-tuning is soft because the Standard Model (SM) parameters are subject to no fine-tuning thanks to their independence from the Higgs-curvature coupling. This soft fine-tuning leaves behind a large vacuum energy ∝ ΛUV 4 which inflates the Universe with a Hubble rate ∝ ΛUV, UV being the SM ultraviolet (UV) boundary. This means that the tensor-to-scalar ratio inferred from cosmic microwave background polarization measurements by BICEP2, Planck and others lead to the determination of UV. The exit from the inflationary phase, as usual, is accomplished via decays of the vacuum energy. Here, we show that, identification of UV with the inflaton, as a sliding UV scale upon the SM, respects the soft fine-tuning constraint and does not disrupt the stability of the SM Higgs boson.
URI: http://doi.org/10.1142/S0217732315501795
http://hdl.handle.net/11147/6824
ISSN: 0217-7323
17936632
Appears in Collections:Physics / Fizik
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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