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arXiv 0810.1380math.DG
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基于内禀扭转的调和几乎切触结构

Harmonic almost contact structures via the intrinsic torsion

J. C. Gonzalez-Davila, Francisco Martin Cabrera

摘要:

我们进一步研究几乎接触度规结构的调和性已经开始由Vergara-Diaz和Wood。利用内禀挠率,给出了调和几乎切触度量结构的几种等价形式,并给出了调和性与几乎切触度量结构类之间的关系。此外,我们还研究了在结构群U(n)x 1的作用下,作为映入定向正交标架的商丛的结构的调和性。最后,利用Bor和Hernandez Lamoneda证明的Bochner型公式,给出了能量绝对极小值的一些例子.

英文摘要:

We go further on the study of harmonicity for almost contact metric structures already initiated by Vergara-Diaz and Wood. By using the intrinsic torsion, we characterise harmonic almost contact metric structures in several equivalent ways and show conditions relating harmonicity and classes of almost contact metric structures. Additionally, we study the harmonicity of such structures as a map into the quotient bundle of the oriented orthonormal frames by the action of the structural group U(n)x1. Finally, by using a Bochner type formula proved by Bor and Hernandez Lamoneda, we display some examples which give the absolute minimum for the energy.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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