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Surprises with the lattice index theorem

Presenter: Roman Höllwieser — TU Wien

Manfried Faber, Urs Heller, Roman Höllwieser, and Gerald Jordan

We investigate the lattice index theorem (Atiyah-Singer) for configurations with thick classical center vortices. For some of these configurations, the index of the overlap Dirac operator differs from the topological charge in the continuum limit.