19,084 research outputs found
A functorial approach to differential characters
We describe Cheeger-Simons differential characters in terms of a variant of
Turaev's homotopy quantum field theories based on chains in a smooth manifold
X.Comment: Published by Algebraic and Geometric Topology at
http://www.maths.warwick.ac.uk/agt/AGTVol4/agt-4-6.abs.htm
Anomalies and Invertible Field Theories
We give a modern geometric viewpoint on anomalies in quantum field theory and
illustrate it in a 1-dimensional theory: supersymmetric quantum mechanics. This
is background for the resolution of worldsheet anomalies in orientifold
superstring theory.Comment: 21 pages, based talk at String-Math 2013; small corrections in v
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