2024/06/19 by Maria Derda, Andreas Helset, Julio Parra-Martinez · 4 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Noncommutative and Quantum Gravity Theories
paper · pdf · doi:10.1007/jhep06(2024)133
openalex publication_date 2024/06/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
A bstract We derive a soft theorem for a massless scalar in an effective field theory with generic field content using the geometry of field space. This result extends the geometric soft theorem for scalar effective field theories by allowing the massless scalar to couple to other scalars, fermions, and gauge bosons. The soft theorem keeps its geometric form, but where the field-space geometry now involves the full field content of the theory. As a bonus, we also present novel double soft theorems with fermions, which mimic the geometric structure of the double soft theorem for scalars.