标题： 基于协变拉格朗日量的强子自旋极化率的描述 显示英文标题

标题： The description for the spin polarizabilities of hadrons based on the covariant Lagrangian

摘要： 基于相对论运动介质电动力学与相对论量子场理论之间的对应原理，得到了电磁场与极化自旋粒子相互作用的协变拉格朗日量。 该拉格朗日量满足相对论量子场理论的主要要求，并包含四个独立的协变自旋结构，这些结构具有特定的物理意义。 研究表明，自旋极化率在${\cal O}(\omega^3)$中对自旋-1/2强子的康普顿散射振幅有贡献。 显示英文摘要

摘要： On the basis of the correspondence principle between the relativistic moving medium electrodynamics and relativistic quantum field theory the covariant Lagrangian of the electromagnetic field interaction with the polarized spin particles have been obtained. This Lagrangian satisfies the main relativistic quantum field theory requirements and contains four independent covariant spin structures, which have particular physical meaning. It is shown that the spin polarizabilities give the contribution to the amplitude for Compton scattering on the spin-1/2 hadron in the ${\cal O}(\omega^3)$.