UV Shadows in EFTs: Accidental Symmetries, Robustness and No-Scale Supergravity

C. P. Burgess, M. Cicoli, D. Ciupke, S. Krippendorf, F. Quevedo

Research output: Contribution to journalArticlepeer-review


We argue that accidental approximate scaling symmetries are robust predictions of weakly coupled string vacua, and show that their interplay with supersymmetry and other (generalised) internal symmetries underlies the ubiquitous appearance of no-scale supergravities in low-energy 4D EFTs. We identify 4 nested types of no-scale supergravities, and show how leading quantum corrections can break scale invariance while preserving some no-scale properties (including non-supersymmetric flat directions). We use these ideas to classify corrections to the low-energy 4D supergravity action in perturbative 10D string vacua, including both bulk and brane contributions. Our prediction for the Kähler potential at any fixed order in (Formula presented.) and string loops agrees with all extant calculations. p-form fields play two important roles: they spawn many (generalised) shift symmetries; and space-filling 4-forms teach 4D physics about higher-dimensional phenomena like flux quantisation. We argue that these robust symmetry arguments suffice to understand obstructions to finding classical de Sitter vacua, and suggest how to get around them in UV complete models.

Original languageEnglish (US)
Article number2000076
JournalFortschritte der Physik
Issue number10
StatePublished - Oct 1 2020

ASJC Scopus subject areas

  • General Physics and Astronomy


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