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Christoph Schweigert: Tensor network states: a topological field theory perspective

Date: 2025-07-17

Time: 16:20 - 17:10

Zoom link: https://kva-se.zoom.us/j/9217561890

Speaker
Christoph Schweigert, Hamburg University

Abstract
Projected entangled pair states (PEPS) and matrix product operators (MPO) are standard tools in quantum information theory and quantum many-body physics. We explain how to understand them in terms of Turaev-Viro models on manifolds with boundary. We then sketch how a recently developed categorical Morita theory for spherical module categories can be used to find generalizations of the standard PEPS tensors.