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X-WR-CALNAME:Kevin Costello: \"Perturbative Chern-Simons theory\"
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LAST-MODIFIED:20070911T190240Z
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DURATION:PT1H
LOCATION:507 Math\, Columbia University
DTSTAMP:20070911T190223Z
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SEQUENCE:4
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SUMMARY:Kevin Costello: \"Perturbative Chern-Simons theory\"
DESCRIPTION:Abstract: I'll explain a construction of an algebraic struct
 ure on the cohomology of a manifold\, which arises by renormalising cert
 ain Chern-Simons functional integrals. This algebraic structure seems to
  be very similar to structures coming from symplectic field theory on th
 e unit cosphere bundle.
ORGANIZER;CN="Robert Lipshitz":mailto:lipshitz@math.stanford.edu
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