Superconnections and higher index theory
Superconnections and higher index theory
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DOI:
10.1007/bf01896662
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发表时间:
1992-12
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影响因子:
--
通讯作者:
J. Lott
中科院分区:
文献类型:
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作者:
J. Lott
LetMbe a smooth closed spin manifold. The higher index theorem, as given for example in Proposition 6.3 of [CM], computes the pairing between the group cohomology of π1(M) and the Chern character of the “higher” index of a Dirac-type operator on M. Using superconnections, we give a heat equation proof of this theorem on the level of differential forms on a noncommutative base space. As a consequence, we obtain a new proof of the Novikov conjecture for hyperbolic groups.