Abelian homotopy Dijkgraaf-Witten theory
S. K. Hansen, J. K. Slingerland, P. R. Turner
Abstract
We construct a version of Dijkgraaf-Witten theory based on a compact abelian Lie group within the formalism of Turaev's homotopy quantum field theory. As an application we show that the 2+1-dimensional theory based on U(1) classifies lens spaces up to homotopy type.
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