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Massive Galileons and Vainshtein screening

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The Vainshtein screening mechanism relies on nonlinear interaction terms becoming dominant close to a compact source. However, theories displaying this mechanism are generally understood to be low-energy theories: it is unclear that operators emerging from UV completion do not interfere with terms inducing Vainshtein screening. In this work, we find a set of interacting massive Galileon theories that exhibit Vainshtein screening; examining potential UV completions of these theories, we determine that the screening does not survive the extension. We find that neglecting operators when integrating out a heavy field is non-trivial, and either care must be taken to ensure that omitted terms are small for the whole domain, or one is forced to work solely with the UV theory. We also comment on massive deformations of the familiar Wess-Zumino Galileons.
Original languageEnglish
Article number050
Number of pages15
JournalJournal of Cosmology and Astroparticle Physics
Issue number02
Publication statusPublished - 23 Feb 2021


  • 2008.01456v2

    Rights statement: This Accepted Manuscript is available for reuse under a CC BY-NC-ND licence after the 12 month embargo period provided that all the terms and conditions of the licence are adhered to. © 2021 IOP Publishing Ltd and Sissa Medialab.

    Accepted author manuscript (Post-print), 447 KB, PDF document

    Due to publisher’s copyright restrictions, this document is not freely available to download from this website until: 23/02/22

    Licence: CC BY-NC-ND

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