Abstract
In a modern understanding of particle physics, global symmetries are approximate and gauge symmetries may be emergent. This view, which has echoes in condensed-matter physics, is supported by a variety of arguments from experiment and theory.
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Acknowledgements
Research supported in part by NSF Grant PHY-1606531.
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Witten, E. Symmetry and emergence. Nat. Phys. 14, 116–119 (2018). https://doi.org/10.1038/nphys4348
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DOI: https://doi.org/10.1038/nphys4348
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