Dipole Spin Polarizabilities and Gyrations of Spin-One Particles in the Duffin–Kemmer–Petiau Formalism

Abstract

In the Duffin–Kemmer–Petiau formalism, on the basis of a covariant model taking account of the spin polarizabilities and gyrations of spin-one particles, relativistic-invariant phenomenological Lagrangians of the interaction of the electromagnetic field with these moments have been obtained. It is shown that in the proposed covariant model with cross symmetry, parity conservation laws, and gauge invariance taken into account, certain spin polarizabilities and gyrations of a spin-one particle contribute to the expansion of the Compton scattering amplitude, starting at the corresponding orders in the radiation frequency in agreement with low-energy theorems for this process.