Non-Invertible Duality Defects in 3+1 Dimensions

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Del Zotto, García Etxebarria, Schäfer-Nameki, https://arxiv.org/abs/2203.10097

Bashmakov, Del Zotto, Hasan, https://arxiv.org/abs/2206.07073

Thorngren and Wang. https://arxiv.org/abs/2106.12577