Numerical and analytical analyses of a matrix model with non-pairwise contracted indices

Numerical and analytical analyses of a matrix model with non-pairwise contracted indices
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具有非成对收缩指数的矩阵模型的数值和分析分析

DOI:
10.1140/epjc/s10052-019-7591-9
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发表时间:
2020
期刊:
The European Physical Journal C
影响因子:
--
通讯作者:
Shingo Takeuchi
Shingo Takeuchi
中科院分区:
--
文献类型:
--
作者:
Naoki Sasakura;Shingo Takeuchi

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我们研究了一个以动力变量为动力变量的矩阵模型,其下指标是成对压缩的,但上指标并不总是成对压缩的。这个矩阵模型的动机来自于量子引力的张量模型,也与玻璃的物理有关,因为它与自旋玻璃的球面自旋模型的复制技巧中出现的形式相同,尽管我们感兴趣的参数范围不同。为了研究一般依赖于NandR的动力学,我们进行了蒙特卡罗模拟,并与前导和次导阶的一些解析计算进行了比较。在周围发现了一个过渡区,它与张量模型一致性所要求的关系相匹配。模拟和分析计算在过渡区外吻合得很好,但在这个区域内不是,这意味着一些相关的构型没有正确地包括在分析计算中。在张量模型的推动下,我们还研究了模拟中产生的组态的持久同调,并观察到其从高维循环到高维循环的逐渐变化。
We study a matrix model that hasas its dynamical variable, whose lower indices are pairwise contracted, but upper ones are not always done so. This matrix model has a motivation from a tensor model for quantum gravity, and is also related to the physics of glasses, because it has the same form as what appears in the replica trick of the sphericalp-spin model for spin glasses, though the parameter range of our interest is different. To study the dynamics, which in general depends onNandR, we perform Monte Carlo simulations and compare with some analytical computations in the leading and the next-leading orders. A transition region has been found around, which matches a relation required by the consistency of the tensor model. The simulation and the analytical computations agree well outside the transition region, but not in this region, implying that some relevant configurations are not properly included by the analytical computations. With a motivation coming from the tensor model, we also study the persistent homology of the configurations generated in the simulations, and have observed its gradual change fromto higher dimensional cycles with the increase ofRaround the transition region.
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