A KK-theoretic perspective on deformed Dirac operators
A KK-theoretic perspective on deformed Dirac operators
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变形狄拉克算子的 KK 理论视角
DOI:
10.1016/j.aim.2021.107604
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发表时间:
2021
影响因子:
1.7
通讯作者:
Song, Yanli
中科院分区:
文献类型:
--
作者:
Loizides, Yiannis;Rodsphon, Rudy;Song, Yanli
We study the index theory of a class of perturbed Dirac operators on non-compact manifolds of the form D+ i c (X), where c (X) is a Clifford multiplication operator by an orbital vector field with respect to the action of a compact Lie group. Our main result is that the index class of such an operator factors as a KK-product of certain KK-theory classes defined by D and X. As a corollary we obtain the excision and cobordism-invariance properties first established by Braverman. An index theorem of Braverman relates the index of D+ i c (X) to the index of a transversally elliptic operator. We explain how to deduce this theorem using a recent index theorem for transversally elliptic operators due to Kasparov.
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影响因子:
1.4
作者:
U. Bunke
通讯作者:
U. Bunke
影响因子:
1.4
作者:
Yiannis Loizides;Yanli Song
通讯作者:
Yanli Song
影响因子:
0.9
作者:
G. Kasparov
通讯作者:
G. Kasparov
DOI:
--
发表时间:
2018
期刊:
影响因子:
--
作者:
Yiannis Loizides;Yanli Song
通讯作者:
Yanli Song
影响因子:
1.7
作者:
Loizides, Yiannis;Song, Yanli
通讯作者:
Song, Yanli