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arXiv 1707.07968hep-th
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经典共形块与等单点变形

Classical conformal blocks and isomonodromic deformations

Joerg Teschner

摘要:

黎曼球面上Virasoro共形块在n个一般和n-3个“重”退化场插入下的主要经典渐近性可以用描述n-穿孔球面上二阶Fuchsian微分方程单值保持变形的Garnier系统的几何来描述.这使我们能够完全证明Virasoro共形块的经典渐近性,并澄清在何种意义上共形场论代表了一个量子化的isomonodromic变形问题。

英文摘要:

The leading classical asymptotics of Virasoro conformal blocks on the Riemann sphere with n generic and n-3 "heavy" degenerate field insertions can be described in terms of the geometry of Garnier system describing the monodromy preserving deformations of second order Fuchsian differential equations on an n-punctured sphere. This allows us to characterise the leading classical asymptotics of Virasoro conformal blocks completely, and to clarify in which sense conformal field theory represents a quantisation of the isomonodromic deformation problem.

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