182 citations · 1.4k across the 35 of their papers we have counts for
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hep-th2024
Field Redefinitions Can Be Nonlocal
Timothy Cohen, Matthew Forslund, Andreas Helset
We revisit the lore establishing the allowed space of field redefinitions and show that there are essentially no restrictions. Our conclusions hold to all orders in perturbation th…
hep-th2024
A Double Copy of Geometry
Andreas Helset
We propose an extension of the color-kinematics duality for nonlinear sigma models with nonsymmetric cosets. The role of color is played by curvatures in field space. The duality b…
hep-th2024
Soft Scalars in Effective Field Theory
Maria Derda, Andreas Helset, Julio Parra-Martinez
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 the…