Exceptional scalar theories in de Sitter space
Authors
Bonifacio, J
Hinterbichler, K
Joyce, A
Roest, D
Publication Date
2022Journal Title
Journal of High Energy Physics
ISSN
1029-8479
Publisher
Springer Science and Business Media LLC
Volume
2022
Issue
4
Language
en
Type
Article
This Version
VoR
Metadata
Show full item recordCitation
Bonifacio, J., Hinterbichler, K., Joyce, A., & Roest, D. (2022). Exceptional scalar theories in de Sitter space. Journal of High Energy Physics, 2022 (4) https://doi.org/10.1007/JHEP04(2022)128
Abstract
<jats:title>A<jats:sc>bstract</jats:sc>
</jats:title><jats:p>The special galileon and Dirac-Born-Infeld (DBI) theories are effective field theories of a single scalar field that have many interesting properties in flat space. These theories can be extended to all maximally symmetric spaces, where their algebras of shift symmetries are simple. We study aspects of the curved space versions of these theories: for the special galileon, we find a new compact expression for its Lagrangian in de Sitter space and a field redefinition that relates it to the previous, more complicated formulation. This field redefinition reduces to the well-studied galileon duality redefinition in the flat space limit. For the DBI theory in de Sitter space, we discuss the brane and dilaton formulations of the theory and present strong evidence that these are related by a field redefinition. We also give an interpretation of the symmetries of these theories in terms of broken diffeomorphisms of de Sitter space.</jats:p>
Keywords
Regular Article - Theoretical Physics, Effective Field Theories, Global Symmetries, Space-Time Symmetries
Identifiers
jhep04(2022)128, 18236
External DOI: https://doi.org/10.1007/JHEP04(2022)128
This record's URL: https://www.repository.cam.ac.uk/handle/1810/336371
Rights
Licence:
http://creativecommons.org/licenses/by/4.0/
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