Asymptotic Symmetries of Yang-Mills with Theta Term and Monopoles
arXiv:1504.05542
Abstract
In this short note we suggest that the singular behavior of large gauge transformations preserving the vacuum at null infinity in Yang-Mills theory implies monopoles into the bulk, as well as that the inclusion of a theta term induces a decoupling between holomorphic and anti-holomorphic currents associated to those large gauge transformations
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