Vainshtein in the UV and a Wilsonian analysis of derivatively coupled scalars

Padilla Antonio, Antonio and Saltas, Ippocratis (2018) Vainshtein in the UV and a Wilsonian analysis of derivatively coupled scalars. Journal of Cosmology and Astroparticle Physics, 2018 (6). 039. ISSN 1475-7516

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Abstract

In the first part of this paper we critically examine the ultra-violet implications of theories that exhibit Vainshtein screening, taking into account both the standard Wilsonian perspective as well as more exotic possibilities. Aspects of this discussion draw on results from the second part of the paper in which we perform a general study of derivatively coupled scalar theories using non–perturbative exact renormalisation group techniques, which are of interest independently of their application to modified gravity. In this context, we demonstrate the suppression of quantum corrections within the Vainshtein radius and discuss the potential relation with the classicalisation conjecture. We question whether the latter can be considered a realistic candidate for UV completion of large-scale modifications of gravity on account of a dangerously low classicalisation/strong coupling scale.

Item Type: Article
Schools/Departments: University of Nottingham, UK > Faculty of Science > School of Physics and Astronomy
Identification Number: https://doi.org/10.1088/1475-7516/2018/06/039
Depositing User: Padilla, Antonio
Date Deposited: 09 Jul 2018 12:35
Last Modified: 27 Jun 2019 04:30
URI: http://eprints.nottingham.ac.uk/id/eprint/52821

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