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On Majorana fermions on the lattice

Presenter: Jan Martin Pawlowski — University of Heidelberg

Igarashi, Yuji; Pawlowski, Jan M.

The construction of Majorana fermions on the lattice is considered. We find topological obstructions tightly linked to those underlying the Nielsen-Ninomiya no-go theorem. On the basis of these obstructions we discuss possible local lattice extensions of the charge conjugation operator as well as the related lattice actions for Majorana fermions.