Harmonic forms and spinors on the Taub-bolt space

Harmonic forms and spinors on the Taub-bolt space
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Taub-bolt 空间上的调和形式和旋量

DOI:
10.1016/j.geomphys.2019.03.005
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发表时间:
2018
影响因子:
1.5
通讯作者:
G. Franchetti
G. Franchetti
中科院分区:
数学3区
文献类型:
--
作者:
G. Franchetti

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本文研究了一类Ricci平坦的ALF型黎曼四维流形Taub-bolt上的L2调和形式空间和L2调和旋量空间。证明了Taub-bolt上的调和平方可积2-形式空间是2维的,并构造了一个基。我们明确地找到所有的L2零模的D A,狄拉克运营商扭曲的任意L2调和连接A,并独立地计算指数的D A。我们将我们的结果与Taub-NUT和欧几里得史瓦西的已知结果进行比较,因为这些流形与Taub-bolt呈现出有趣的相似之处。在这样做时,我们推广已知的结果,关于调和旋的欧几里德史瓦西。
This paper studies the space of L 2 harmonic forms and L 2 harmonic spinors on Taub-bolt, a Ricci-flat Riemannian 4-manifold of ALF type. We prove that the space of harmonic square-integrable 2-forms on Taub-bolt is 2-dimensional and construct a basis. We explicitly find all L 2 zero modes of D̸ A, the Dirac operator twisted by an arbitrary L 2 harmonic connection A, and independently compute the index of D̸ A. We compare our results with those known in the case of Taub-NUT and Euclidean Schwarzschild as these manifolds present interesting similarities with Taub-bolt. In doing so, we generalise known results concerning harmonic spinors on Euclidean Schwarzschild.
ALF 引力瞬子的谐波形式
DOI: 10.1007/jhep12(2014)075
发表时间: 2014
影响因子: 5.4
作者:
Franchetti G
通讯作者: Franchetti G