标题： 一致的相互作用和对合 显示英文标题

标题： Consistent interactions and involution

摘要： 从场方程的对合概念出发，提出了一种通用方法，用于构建场之间的一致相互作用。 该方法同样适用于拉格朗日和非拉格朗日方程，并且是显式协变的。 没有引入辅助场。 这些方程在哈密顿形式中可能具有（或没有）规范对称性和/或第二类约束，只要理论允许哈密顿描述。 在每种情况下，该方法都能确定所有一致的相互作用。 显示英文摘要

摘要： Starting from the concept of involution of field equations, a universal method is proposed for constructing consistent interactions between the fields. The method equally well applies to the Lagrangian and non-Lagrangian equations and it is explicitly covariant. No auxiliary fields are introduced. The equations may have (or have no) gauge symmetry and/or second class constraints in Hamiltonian formalism, providing the theory admits a Hamiltonian description. In every case the method identifies all the consistent interactions.