Added talk Shuhei Ohyama

_seminars/2024-11-07.md

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+---
+date: "2024-11-07T15:00:00"
+speaker: Shuhei Ohyama
+affiliation: Vienna University
+title: "1+1d SPT phases with fusion category symmetry: interface modes and non-abelian Thouless pump"
+type: lunch-seminar
+abstract: true
+---
+
+Fusion category symmetry is the most general finite symmetry in 1+1 dimensional systems. We investigated gapped phases defined on a
+lattice with fusion category symmetry using the technique of matrix product states, focusing on the following aspects:
+1. SPT invariants
+2. Bulk-boundary correspondence/Thouless pump
+3. Classification of a parametrized family of general gapped phases
+
+In my talk, I would like to explain these topics, particularly topics 1 and 2.
+This talk is mainly based on joint work arXiv:2408.15960 with Kansei Inamura.