规范发生器的多重选择与相互作用的一致性
Multiple choice of gauge generators and consistency of interactions
摘要：
通常假定任何相容的相互作用要么使相应自由理论的规范对称性变形，要么保持它。我们提出了一个简单的模型，一个明显的不可约的规范对称性不生存的相互作用，而相互作用是一致的，因为它保留了物理自由度的数量。该模型承认一个不太明显的规范生成元的可约集，它与相互作用相容，并且在耦合常数上是光滑的。重力模型的可能应用进行了讨论。
英文摘要：
It is usually assumed that any consistent interaction either deforms or retains the gauge symmetries of the corresponding free theory. We propose a simple model where an obvious irreducible gauge symmetry does not survive an interaction, while the interaction is consistent as it preserves the number of physical degrees of freedom. The model turns out admitting a less obvious reducible set of gauge generators which is compatible with the interaction and smooth in coupling constant. Possible application to gravity models is discussed.
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