arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0905.0040math.DGhep-th
收藏

第一Chern class为零的紧致复齐性空间的几何

Geometry of compact complex homogeneous spaces with vanishing first Chern class

Gueo Grantcharov

摘要:

本文证明了:在对复结构作适当变形后,任何第一陈类为零的紧致复齐性空间都存在一个具有挠结构的齐性Calabi-Yau空间,只要它也具有不变体积形式.在齐次C-空间中给出了这种空间的描述,以及许多例子和在3维情况下的分类。我们计算了一些例子的上同调环,并证明在14维中有无穷多个具有相同Hodge数和扭转陈类的单连通空间允许这样的结构。我们还提供了一个例子解决的Strominger方程的杂化弦理论。

英文摘要:

We prove that any compact complex homogeneous space with vanishing first Chern class after an appropriate deformation of the complex structure admits a homogeneous Calabi-Yau with torsion structure, provided that it also has an invariant volume form. A description of such spaces among the homogeneous C-spaces is given as well as many examples and a classification in the 3-dimensional case. We calculate the cohomology ring of some of the examples and show that in dimension 14 there are infinitely many simply-connected spaces with the same Hodge numbers and torsional Chern classes admitting such structure. We provide also an example solving the Strominger's equations in heterotic string theory.

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。

↑