Colloquium: Shu-Heng Shao: “What's Done Cannot Be Undone: Non-Invertible Symmetries”

Name: Colloquium: Shu-Heng Shao: “What's Done Cannot Be Undone: Non-Invertible Symmetries”
Start: 2026-05-08T16:00:00-05:00
End: 2026-05-08T17:00:00-05:00
Location: Technological Institute, L211

Friday, May 8, 2026 | 4:00 PM - 5:00 PM CT

Technological Institute, L211, 2145 Sheridan Road, Evanston, IL 60208 map it

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Abstract: I will discuss recent developments on a novel kind of symmetry known as non-invertible symmetry. It is implemented by conserved operators that do not have an inverse, going outside the paradigm set by Wigner's theorem. Nonetheless, they lead to new conservation laws, novel topological phases of quantum matter, and insights into particle phenomenology. I will start with the example in the Ising lattice model, and proceed to discuss applications in pion decay and lattice chiral symmetry.

Shu-Heng Shao, Associate Professor, MIT

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Joan West
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Physics and Astronomy Colloquia

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Colloquium: Shu-Heng Shao: “What's Done Cannot Be Undone: Non-Invertible Symmetries”

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