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hep-th2026
Logarithmic Soft Photon Theorem and Waveform Tails in Higher Dimensions
Biswajit Sahoo
We derive the leading logarithmic soft-photon theorem in spacetime dimensions and its classical radiative counterpart. A direct one-loop analysis in massive scalar quantum el…
hep-th2026
Flowing with Displacements and Tilts: Surface Operators in Models
Jake Belton, Nadav Drukker, Biswajit Sahoo
Defect conformal field theories have special operators of protected dimension known as displacements and tilts. They arise due to the breaking of global symmetries by the defect an…
hep-th2026
All loop soft photon theorems and higher spin currents on the celestial sphere
Shamik Banerjee, Raju Mandal, Biswajit Sahoo
Soft factorization theorems can be reinterpreted as Ward identities for (asymptotic) symmetries of scattering amplitudes in asymptotically flat space-time. In this paper we study t…