UV-completion by classicalization

By G. Dvali, G. Giudice, César Gómez, A. Kehagias. 2010

225 citations recorded by the source corpus.

We suggest a novel approach to UV-completion of a class of non-renormalizable theories, according to which the high-energy scattering amplitudes get unitarized by production of extended classical objects (classicalons), playing a role analogous to black holes, in the case of non-gravitational theories. The key property of classicalization is the existence of a classicalizer field that couples to energy-momentum sources. Such localized sources are excited in high-energy scattering processes and lead to the formation of classicalons. Two kinds of natural classicalizers are Nambu-Gold stone bosons (or, equivalently, longitudinal polarizations of massive gauge fields) and scalars coupled to energy-momentum type sources. Classicalization has interesting phenomenological applications for the UVcompletion of the Standard Model both with or without the Higgs. In the Higgless Standard Model the high-energy scattering amplitudes of longitudinal W -bosons self-unitarize via classicalization, without the help of any new weakly-coupled physics. Alternatively, in the presence of a Higgs boson, classicalization could explain the stabilization of the hierarchy. In both scenarios the high-energy scatterings are dominated by the formation of classicalons, which subsequently decay into many particle states. The experimental signatures at the LHC are quite distinctive, with sharp differences in the two cases.

Subfields: Atomic and Molecular Physics, and Optics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/13021b5d9b06584e76c4791466f1f5a76e2a7590

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Citations in the corpus

Natural tuning: towards a proof of concept (2013, background): “red. Finally, another interesting proposal, named \classicalization", relating the electroweak hierarchy problem to the possibility of a non-Wilsonian UV completion has been put forward recently [28]. One may ask whether natural tuning is related to classicalization. The answer is that the two ”
Beyond the Cosmological Standard Model (2014, unknown): “16) to a massive source, one again finds that the equation of motion admits a first integral, which can be solved for φ′(r) as [200, 488] φ′(r) = Λ2 √ 1 + 16π2 (r/r?) 4 .”
Black hole's quantum N‐portrait (2011, background): “In [3] the above concept of non-Wilsonian UV-completion was generalized to other classes of theories and was termed classicalization.”
M5-Branes, D4-Branes and quantum 5D super-Yang-Mills (2010, background): “An alternative, or perhaps complementary, possibility is that there is some kind of variation of the ‘classicalisation’ process of [27].”
Black Hole Formation and Classicalization in Ultra-Planckian 2 ! N Scattering (2014, background): “ure of quantum gravity at ultra-Planckian energies. In particular, this issue is central to the idea that gravity is UV-complete in a non-Wilsonian sense [1], based on the concept of classicalization [2]. The standard (Wilsonian) approach to UV-completion implies that interactions at higher and high”
A systematic approach to generalisations of General Relativity and their cosmological implications (2018, background): “However, the presence of the Vainshtein mechanism and the lack of a Wilsonian UV-completion could just mean the urgency of an alternative UV completion such as classicalization, [115, 116, 117].”
Maximal freedom at minimum cost: linear large-scale structure in general modifications of gravity (2014, unknown): “via classicalisation [86, 87].”
Massive Gravity (2014, background): “The physical interpretation of these superluminal propagations was studied in other non-Galileon models in [199, 43] and see [206, 469] for their potential connection with classicalization [214, 213, 205, 11].”