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arXiv 0907.1503hep-th
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一阶弦论和Kodaira-Spencer方程。II

First Order String Theory and the Kodaira-Spencer Equations. II

O. Gamayun, A. Marshakov

摘要:

考虑了对应于目标空间复杂结构形变的一阶玻色弦论,在原算符的扰动下。我们计算了该理论中的关联函数并研究了它们的发散性。研究发现,这些关联函数与世界片共形不变性的一致性要求Kodaira-Spencer方程满足目标空间Beltrami微分。对于包含一个探测运算符的三点式和四点式探测器,将显式检查此语句。我们讨论了这些分歧的来源,以及它们与β函数或有效作用和BRST方法中的多顶点结构的关系。

英文摘要:

The first-order bosonic string theory, perturbed by primary operator, corresponding to the deformation of target-space complex structure is considered. We compute the correlation functions in this theory and study their divergencies. It is found, that consistency of these correlation functions with the world-sheet conformal invariance requires the Kodaira-Spencer equations to be satisfied by target-space Beltrami differentials. This statement is checked explicitly for the three-point and four-point correlators, containing one probe operator. We discuss the origin of these divergences and their relation with beta-functions or effective action and polyvertex structures in BRST approach.

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