Friday, September 28, 2012

1209.6211 (Jian Wang et al.)

Noncommutative Residue and sub-Dirac Operators for Foliations    [PDF]

Jian Wang, Yong Wang
In this paper, we define lower dimensional volumes associated to sub-Dirac operators for foliations. In some cases, we compute these lower dimensional volumes. We also prove the Kastler-Kalau-Walze type theorems for foliations with or without boundary. As a corollary, we give an explanation of the gravitational action for the Robertson-Walker space $[a, b]\times_{f}M^{3}$.
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