Document type
ArticleVersion
Published versionPublication date
All rights reserved
Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/122140
Beyond dimensional analysis: Higgs and new Higgs inflations do not violate unitarity
Journal Title
Authors
Director/Tutor
Journal ISSN
Volume Title
Related resource
Abstract
Naive dimensional analysis seems to suggest possible unitarity violations in the framework of the Higgs and new Higgs inflationary scenarios. These violations seem to happen around the value in which the potential energy, per a given Higgs boson's vacuum expectation value, crosses the perturbative cutoff scale calculated around the electroweak vacuum. Conversely to these expectations, we show that, by using an exact analysis of the background dependent cutoff scale, and by including the contribution of the phase-space volume in the perturbative scattering amplitudes of scalars, no violation of (perturbative) unitarity might ever happen during the whole Universe evolution.
Subject
Subject (English)
Citation
Citation
GERMANI, Cristiano and ESCRIVÀ, Albert. Beyond dimensional analysis: Higgs and new Higgs inflations do not violate unitarity. Physical Review D. 2017. Vol. 95, num. 12, pags. 123526-1-123526-5. ISSN 2470-0010. [consulted: 18 of June of 2026]. Available at: https://hdl.handle.net/2445/122140