The study of topological defects in quantum field theory has seen a wealth of activity recently leading to many interesting insights, for example the explicit realisation of non-invertible topological defects in higher dimensional QFTs or the description of the higher algebraic structures inherent in these topological defects.
In this talk, I would like to give a gentle introduction to this topic using the twodimensional Ising model on the lattice and in the continuum as an example.
Ingo Runkel (Hamburg): Topological defects
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- Runkel__29_April_2025.pdf 519 KB
