University of Groningen
Aspects of fine-tuning in theories with extended scalar sectors Peeters, Ruud
DOI:
10.33612/diss.168714299
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Publication date: 2021
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Peeters, R. (2021). Aspects of fine-tuning in theories with extended scalar sectors. University of Groningen. https://doi.org/10.33612/diss.168714299
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1. There are good reasons to assume the existence of physics beyond the Standard Model. (Chapters 1 and 2)
2. When considering vevs as input parameters, there is often no fine-tuning in the minimum equations. But fine-fine-tuning can still appear when taking into account experimental constraints. (Chapter 4) 3. There are reasons to reconsider the viewpoint where vevs are seen as output parameters of the Lagrangian. As an alternative, the values of the vevs can be included in the theory. (Chapter 5)
4. The decoupling method is a valid way to ensure that the effective potential remains perturbative in a theory with a large hierarchy in scales. (Chapter 6)
5. In a theory with only two mass scales, it is possible to define the theory in such a way that the hierarchy problem does not appear. (Chapter 6)
6. It is not necessary to demand that every step of beyond the Standard Model physics is natural by itself. (Conclusions)
7. More interaction between master students and PhD students at the VSI would benefit both parties.
