Natural tuning: towards a proof of concept

By S. Dubovsky, V. Gorbenko, Mehrdad Mirbabayi. 2013

138 citations recorded by the source corpus.

A bstractThe cosmological constant problem and the absence of new natural physics at the electroweak scale, if confirmed by the LHC, may either indicate that the nature is fine-tuned or that a refined notion of naturalness is required. We construct a family of toy UV complete quantum theories providing a proof of concept for the second possibility. Low energy physics is described by a tuned effective field theory, which exhibits relevant interactions not protected by any symmetries and separated by an arbitrary large mass gap from the new “gravitational” physics, represented by a set of irrelevant operators. Nevertheless, the only available language to describe dynamics at all energy scales does not require any fine-tuning. The interesting novel feature of this construction is that UV physics is not described by a fixed point, but rather exhibits asymptotic fragility. Observation of additional unprotected scalars at the LHC would be a smoking gun for this scenario. Natural tuning also favors TeV scale unification.

Subfields: Atomic and Molecular Physics, and Optics, Nuclear and High Energy Physics, Political Science and International Relations

View Paper: https://www.semanticscholar.org/paper/accc7c14fce2a97c5264573bd8f06fcd2e408195

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In Atomic and Molecular Physics, and Optics

1. Mehrdad Mirbabayi
2. S. Dubovsky
3. V. Gorbenko
4. R. Tateo
5. A. Cavaglià
6. Monica Guica
7. G. Bonelli

In Nuclear and High Energy Physics

1. Mehrdad Mirbabayi
2. A. Cavaglià
3. Monica Guica
4. V. Gorbenko
5. S. Dubovsky
6. R. Tateo
7. G. Bonelli
8. N. Doroud

In Political Science and International Relations

1. G. Bonelli

Citations in the corpus

• An integrable Lorentz-breaking deformation of two-dimensional CFTs (2017, background): “Rather, it has been argued to correspond to a new type of UV behaviour, more characteristic of a theory of quantum gravity, termed “asymptotic fragility” [7, 10].”
• TT¯\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ T\overline{T} $$\end{document} -deformations in closed form (2018, background): “condition f(0,y) = F(y) is equivalent to the implicit equation f(t,y) = F (y −tf(t,y)). 6 This agrees with the expression obtained in [12] (See also [29])4 whose first few terms were first presented in [30]. 2.3 Curvature couplings Another generalisation of (2.7) is obtained by imposing as the boundar”
• TT¯-deformed 2D quantum field theories (2016, background): “Finally, we remark that the CDD factor deformation of a free massive boson theory was considered in [20], where the first two orders of the perturbed action were constructed by a direct diagrammatic analysis, in perfect agreement with (6.”
• Asymptotic fragility, near AdS2 holography and TT¯$$ T\overline{T} $$ (2017, background): “As discussed in [2], as a consequence of the momentum conservation, (2.”