Effective Field Theories on the Jet Bundle

Craig, Nathaniel; Lee, Yu-Tse

doi:10.1103/PhysRevLett.132.061602

Title: Effective Field Theories on the Jet Bundle

Journal Article · 08 February 2024 · Physical Review Letters

DOI: https://doi.org/10.1103/PhysRevLett.132.061602 · OSTI ID:2293625

Craig, Nathaniel;

We develop a generalized field space geometry for higher-derivative scalar field theories, expressing scattering amplitudes in terms of a covariant geometry on the all-order jet bundle. The incorporation of spacetime and field derivative coordinates solves complications due to higher-order derivatives faced by existing approaches to field space geometry. We identify a jet bundle analog to the field space metric that, besides field redefinitions, exhibits invariance under total derivatives. The invariance consequently extends to its amplitude contributions and the canonical covariant geometry. Published by the American Physical Society 2024

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Sponsoring Organization:: USDOE

Grant/Contract Number:: SC0011702

OSTI ID:: 2293625

Journal Information:: Physical Review Letters, Journal Name: Physical Review Letters Vol. 132 Journal Issue: 6; ISSN 0031-9007

Publisher:: American Physical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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