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hep-th2025
Geometric Building Blocks of Effective Field Theory Amplitudes
Timothy Cohen, Xu-Xiang Li, Zhengkang Zhang
On-shell amplitudes are invariant under field redefinitions. Nonderivative field redefinitions have a natural interpretation as coordinate transformations on the target manifold. G…
hep-th2025
Geometry of soft scalars at one loop
Timothy Cohen, Ipak Fadakar, Andreas Helset +1
We extend the soft theorems for scattering amplitudes of scalar effective field theories to one-loop order. Our analysis requires carefully accounting for the fact that the soft li…