Generalized global symmetries

@article{Gaiotto2014GeneralizedGS,
  title={Generalized global symmetries},
  author={Davide Gaiotto and Anton Kapustin and Nathan Seiberg and Brian Willett},
  journal={Journal of High Energy Physics},
  year={2014},
  volume={2015},
  pages={1-62}
}
A bstractA q-form global symmetry is a global symmetry for which the charged operators are of space-time dimension q; e.g. Wilson lines, surface defects, etc., and the charged excitations have q spatial dimensions; e.g. strings, membranes, etc. Many of the properties of ordinary global symmetries (q = 0) apply here. They lead to Ward identities and hence to selection rules on amplitudes. Such global symmetries can be coupled to classical background fields and they can be gauged by summing over… Expand

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