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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…
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…
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…
Magnetised Bounds for Conformal Field Theories
Christopher P. Herzog, William H. Pannell, Biswajit Sahoo +1
Aspects of parity-preserving, charge-conjugation-invariant, three-dimensional conformal field theories (CFTs) with a global symmetry in the presence of a background magnetic…
Correlation Functions and Trace Anomalies in Weakly Relevant Flows
Denis Karateev, Biswajit Sahoo
We study abstract weakly relevant flows in a general number of dimensions. They arguably provide the simplest example of renormalization group (RG) flows between two non-trivial fi…
Trace Anomalies and the Graviton-Dilaton Amplitude
Denis Karateev, Zohar Komargodski, João Penedones +1
We consider 3+1 dimensional Quantum Field Theories (QFTs) coupled to the dilaton and the graviton. We show that the graviton-dilaton scattering amplitude receives a universal contr…