182 citations · 1.4k across the 35 of their papers we have counts for
36 papers
geoSCET: Soft Theorems from Power Counting
Timothy Cohen, Patrick Hager, Andreas Helset
We apply the framework of Soft Collinear Effective Theory (SCET) to the theory of the geometric scalar field. The resulting ``geoSCET'' manifests an emergent geometry in the soft s…
Hidden simplicity in the scattering for neutron stars and black holes
Rafael Aoude, Andreas Helset
Heavy particle effective theory applied to spinning black holes provides a natural framework in which propagators linearize and numerators exponentiate. In this work, we exploit th…
Renormalizing Two-Fermion Operators in the SMEFT via Supergeometry
Benoît Assi, Andreas Helset, Julie Pagès +1
We extend the geometric framework of field-space covariance for loop computations, thereby unifying the treatment of scalars, fermions, and gauge bosons in effective field theories…
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…
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…
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…