The resolvent cocycle in twisted cyclic cohomology and a local index formula for the Podle's sphere
The resolvent cocycle in twisted cyclic cohomology and a local index formula for the Podle's sphere
复制标题
扭曲循环上同调中的可解余环和Podle球面的局部指数公式
DOI:
10.4171/jncg/147
复制
发表时间:
2011
影响因子:
0.9
通讯作者:
R. Senior
中科院分区:
文献类型:
--
作者:
A. Rennie;R. Senior
We continue the investigation of twisted homology theories in the context of dimen- sion drop phenomena. This work unifies previous equivariant index calculations in twisted cyclic cohomology. We do this by proving the existence of the resolvent cocycle, a finitely summable analogue of the JLO cocycle, under weaker smoothness hypotheses and in the more general setting of 'modular' spectral triples. As an application we show that using our twisted resolvent cocycle, we can obtain a local index formula for the Podles sphere. The resulting twisted cyclic cocycle has non-vanishing Hochschild class which is in dimension 2.
DOI:
10.48550/arxiv.1008.1830
发表时间:
2010
期刊:
arXiv e-prints
影响因子:
--
作者:
Kraehmer Ulrich
通讯作者:
Kraehmer Ulrich