• Corpus ID: 14378311

D-branes and K-theory in 2D topological field theory

  title={D-branes and K-theory in 2D topological field theory},
  author={Gregory W. Moore and Graeme B. Segal},
  journal={arXiv: High Energy Physics - Theory},
  • G. Moore, G. Segal
  • Published 5 September 2006
  • Mathematics
  • arXiv: High Energy Physics - Theory
This expository paper describes sewing conditions in two-dimensional open/closed topological field theory. We include a description of the G-equivariant case, where G is a finite group. We determine the category of boundary conditions in the case that the closed string algebra is semisimple. In this case we find that sewing constraints – the most primitive form of worldsheet locality – already imply that D-branes are (G-twisted) vector bundles on spacetime. We comment on extensions to cochain… 

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