On the Higher Categorical Structure of Topological Defects in Quantum Field Theories

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• Lukas Muller (Perimeter Institute for Theoretical Physics)
• Monday 27 October 2025, 15:30-16:30
• Seminar Room 1, Newton Institute.

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BIDW02 - Diving Deeper into Defects: On the Intersection of Field Theory, Quantum Matter, and Mathematics

It is believed that topological defects in quantum field theory assemble into higher categories. These higher categories often carry additional structures, depending on the specific context. In this talk, I will address the question: What are the additional structures present on higher categories of topological defects for different tangential structures, such as orientations or spin structures? Along the way, I will review mathematical aspects of the study of topological defects and highlight open questions and problems.

This talk is part of the Isaac Newton Institute Seminar Series series.

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