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arXiv math/0010015math.DG
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规范理论和校准几何,

Gauge theory and calibrated geometry, I

Gang Tian

摘要:

子流形的几何与函数理论和向量丛密切相关。在许多几何和物理问题中,弄清这两个物体是如何相互作用的具有根本的重要性。这种关系的一个典型例子是代数流形上的线丛的Picard群同构于由全纯超曲面模线性等价生成的因子群。在层的K-群和全纯圈的Chow环之间也有类似的对应。最近还有两个例子可以说明这种关系。弦论中的镜像对称揭示了一个更深层次的现象,涉及到特殊的拉格朗日循环(cf. [SYZ])。另一方面,C. Taubes证明了在任何辛4-流形上,Seiberg-Witten不变量与Gromov-Witten不变量一致。在本文中,我们将展示另一个自然的相互作用之间的杨-米尔斯联络,这是一个杨-米尔斯作用的临界点,一个向量丛,和极小子流形,这已经被广泛研究了多年的经典微分几何和变分法。

英文摘要:

The geometry of submanifolds is intimately related to the theory of functions and vector bundles. It has been of fundamental importance to find out how those two objects interact in many geometric and physical problems. A typical example of this relation is that the Picard group of line bundles on an algebraic manifold is isomorphic to the group of divisors, which is generated by holomorphic hypersurfaces modulo linear equivalence. A similar correspondence can be made between the K-group of sheaves and the Chow ring of holomorphic cycles. There are two more very recent examples of such a relation. The mirror symmetry in string theory has revealed a deeper phenomenon involving special Lagrangian cycles (cf. [SYZ]). On the other hand, C. Taubes has shown that the Seiberg-Witten invariant coincides with the Gromov-Witten invariant on any symplectic 4-manifolds. In this paper, we will show another natural interaction between Yang-Mills connections, which are critical points of a Yang-Mills action associated to a vector bundle, and minimal submanifolds, which have been studied extensively for years in classical differential geometry and the calculus of variations.

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