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arXiv 0804.3236hep-th
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M理论矩阵模型的$β$ -变形

$β$-deformation for matrix model of M-theory

Hidehiko Shimada

摘要:

本文考虑M理论矩阵模型的一类新变形。该变形类似于所谓的$\b$-$D=3+1$的变形,$\mN=4$ Super Yang-Mills理论,其保持共形对称性。结果表明,在涉及变形参数和矩阵大小$N$的标度极限下,变形的矩阵模型可以看作是11维超重力环境中特定弯曲背景下M理论的一个矩阵模型.背景属于所谓的pp波型度规,具有线性依赖于横坐标的非恒定四形式通量。研究了变形模型的一些稳定解,这些稳定解对应于环面拓扑的膜。特别是,它被发现,显然不同的配置的膜,具有不同的缠绕数,是不可区分的矩阵模型。同时引入两个$\b$ -变形和质量变形也被认为是,特别是,一种情况下,被发现,其中稳定的膜配置之间插入一个环面和一个球体,取决于变形参数的值。

英文摘要:

A new class of deformation of the matrix model of M-theory is considered. The deformation is analogous to the so-called $\b$-deformation of $D=3+1$, $\mN=4$ Super Yang-Mills theory, which preserves the conformal symmetry. It is shown that the deformed matrix model can be considered as a matrix model of M-theory on a certain curved background in eleven-dimensional supergravity, under a scaling limit involving the deformation parameter and $N$ (the size of the matrices). The background belongs to the so-called pp-wave type metric with a non-constant four-form flux depending linearly on transverse coordinates. Some stable solutions of the deformed model are studied, which correspond to membranes with the torus topology. In particular, it is found that apparently distinct configurations of membranes, having different winding numbers, are indistinguishable in the matrix model. Simultaneous introduction of both $\b$-deformation and mass-deformation is also considered, and, in particular, a situation is found in which the stable membrane configuration interpolates between a torus and a sphere, depending on the values of the deformation parameters.

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。

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