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arXiv 0910.0776hep-th
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大N Yang Mills理论中的精确β函数和胶球谱

Exact beta function and glueball spectrum in large-N Yang Mills theory

Marco Bochicchio

摘要:

在纯大N杨-米尔斯理论中,存在一个在大N下精确可解的拟BPS扇区。它遵循一个精确的β函数和胶球谱在这个部门。主要的技术工具是一个新的准BPS威尔逊圈的全纯环方程,它作为n=1超对称规范理论胶球超势的Dijkgraaf-Vafa全纯环方程的非超对称类似物出现。新的全纯回路方程是局部化的,即通过回路的变形(即同调中的消失边界),简化为临界方程,这在某种程度上类似于Witten在SUSY规范理论中通过共边界变形的上同调局部化。

英文摘要:

In the pure large-N Yang-Mills theory there is a quasi-BPS sector that is exactly solvable at large N. It follows an exact beta function and the glueball spectrum in this sector. The main technical tool is a new holomorphic loop equation for quasi-BPS Wilson loops, that occurs as a non-supersymmetric analogue of Dijkgraaf-Vafa holomorphic loop equation for the glueball superpotential of n=1 SUSY gauge theories. The new holomorphic loop equation is localized, i.e. reduced to a critical equation, by a deformation of the loop that is a vanishing boundary in homology, somehow in analogy with Witten's cohomological localization by a coboundary deformation in SUSY gauge theories.

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