Seagull Terms Research Articles

Low-Energy Theorems for Massless Bosons: Photons and Gravitons

The low-energy theorems for the scattering of massless bosons are discussed. Photon and graviton scattering is examined in detail, using techniques which make no high-energy assumptions. It is shown that the low-energy form for the amplitude is given by the dispersion-theoretic Born approximation, and that the energy dependence of the neglected terms is determined by the spin of the scattered boson. It is demonstrated that Schwinger terms and sea-gull terms do not cancel in gravity theory.

Covariance and the Cancellation of Schwinger and Seagull Terms in Applications of Current Algebras

Covariance and the Cancellation of Schwinger and Seagull Terms in Applications of Current Algebras

Covariance and the Cancellation of Schwinger and Seagull Terms in Applications of Current Algebras

Covariance and the Cancellation of Schwinger and Seagull Terms in Applications of Current Algebras