
We show that any complex (respectively real) representation of finite group naturally generates a open-closed (respectively Klein) topological field theory over complex numbers. We relate the 1-point correlator for the projective plane in this theory with the Frobenius-Schur indicator on the representation. We relate any complex simple Klein TFT to a real division ring.
topological quantum field theory, FOS: Physical sciences, Mathematical Physics (math-ph), group representation, Topological quantum field theories (aspects of differential topology), QA1-939, FOS: Mathematics, Representation Theory (math.RT), Mathematics, Group rings of finite groups and their modules (group-theoretic aspects), Mathematics - Representation Theory, Mathematical Physics
topological quantum field theory, FOS: Physical sciences, Mathematical Physics (math-ph), group representation, Topological quantum field theories (aspects of differential topology), QA1-939, FOS: Mathematics, Representation Theory (math.RT), Mathematics, Group rings of finite groups and their modules (group-theoretic aspects), Mathematics - Representation Theory, Mathematical Physics
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