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arXiv 1509.03572hep-thgr-qcmath-phmath.MP
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随机多道矩阵模型的涌现几何

Emergent geometry from random multitrace matrix models

B. Ydri, A. Rouag, K. Ramda

摘要:

提出了一种新的方案,在随机多道矩阵模型的几何形状的出现与酉$U(N) $不变性,即没有一个动力学项,一个单一的厄米矩阵$M$。特别地,从无序到均匀有序转变的临界指数确定的涌现几何的尺寸,而从矩阵$M$的本征值分布的维格纳循环定律行为确定的度量。如果均匀有序相在相图中不存在,那么在多迹矩阵模型中就不存在涌现几何。

英文摘要:

A novel scenario for the emergence of geometry in random multitrace matrix models of a single hermitian matrix $M$ with unitary $U(N) $ invariance, i.e. without a kinetic term, is presented. In particular, the dimension of the emergent geometry is determined from the critical exponents of the disorder-to-uniform-ordered transition whereas the metric is determined from the Wigner semicircle law behavior of the eigenvalues distribution of the matrix $M$. If the uniform ordered phase is not sustained in the phase diagram then there is no emergent geometry in the multitrace matrix model.

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