Journal
COMMUNICATIONS IN MATHEMATICAL PHYSICS
Volume 252, Issue 1-3, Pages 393-414Publisher
SPRINGER
DOI: 10.1007/s00220-004-1227-z
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We discuss the relation between open and closed string correlators using topological string theories as a toy model. We propose that one can reconstruct closed string correlators from the open ones by considering the Hochschild cohomology of the category of D-branes. We compute the Hochschild cohomology of the category of D-branes in topological Landau-Ginzburg models and partially verify the conjecture in this case.
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