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Phases of a matrix model with non-pairwise index contractions
Progress of Theoretical and Experimental Physics Pub Date : 2020-07-01 , DOI: 10.1093/ptep/ptaa085
Dennis Obster 1 , Naoki Sasakura 1
Affiliation  

Recently a matrix model with non-pairwise index contractions has been studied in the context of the canonical tensor model, a tensor model for quantum gravity in the canonical formalism. This matrix model also appears in the same form with different ranges of parameters and variables, when the replica trick is applied to the spherical $p$-spin model ($p=3$) in spin glass theory. Previous studies of this matrix model suggested the presence of a continuous phase transition around $R\sim N^2/2$, where $N$ and $R$ designate its matrix size $N\times R$. This relation between $N$ and $R$ intriguingly agrees with a consistency condition of the tensor model in the leading order of $N$, suggesting that the tensor model is located near or on the continuous phase transition point and therefore its continuum limit is automatically taken in the $N\rightarrow \infty$ limit. In the previous work, however, the evidence for the phase transition was not satisfactory due to the slowdown of the Monte Carlo simulations. In this work, we provide a new setup for Monte Carlo simulations by integrating out the radial direction of the matrix. This new strategy considerably improves the efficiency, and allows us to clearly show the existence of the phase transition. We also present various characteristics of the phases, such as dynamically generated dimensions of configurations, cascade symmetry breaking, and a parameter zero limit, to discuss some implications to the canonical tensor model.

中文翻译:

具有非成对索引收缩的矩阵模型的阶段

最近,在规范张量模型的背景下研究了具有非成对索引收缩的矩阵模型,该模型是规范形式主义中量子引力的张量模型。当复制技巧应用于自旋玻璃理论中的球形 $p$-spin 模型($p=3$)时,该矩阵模型也以相同的形式出现,具有不同的参数和变量范围。先前对该矩阵模型的研究表明,在 $R\sim N^2/2$ 周围存在连续相变,其中 $N$ 和 $R$ 表示其矩阵大小 $N\times R$。$N$ 和 $R$ 之间的这种关系有趣地符合 $N$ 前导顺序中张量模型的一致性条件,表明张量模型位于连续相变点附近或之上,因此其连续统限制自动采用 $N\rightarrow\infty$ 限制。然而,在之前的工作中,由于蒙特卡罗模拟的放缓,相变的证据并不令人满意。在这项工作中,我们通过整合矩阵的径向方向为 Monte Carlo 模拟提供了一个新的设置。这种新策略大大提高了效率,并使我们能够清楚地表明相变的存在。我们还介绍了各个阶段的各种特征,例如动态生成的配置维度、级联对称破坏和参数零限制,以讨论对规范张量模型的一些影响。由于蒙特卡罗模拟的放缓,相变的证据并不令人满意。在这项工作中,我们通过整合矩阵的径向方向为 Monte Carlo 模拟提供了一个新的设置。这种新策略大大提高了效率,并使我们能够清楚地表明相变的存在。我们还介绍了各个阶段的各种特征,例如动态生成的配置维度、级联对称破坏和参数零限制,以讨论对规范张量模型的一些影响。由于蒙特卡罗模拟的放缓,相变的证据并不令人满意。在这项工作中,我们通过整合矩阵的径向方向为 Monte Carlo 模拟提供了一个新的设置。这种新策略大大提高了效率,并使我们能够清楚地表明相变的存在。我们还介绍了各个阶段的各种特征,例如动态生成的配置维度、级联对称破坏和参数零限制,以讨论对规范张量模型的一些影响。并使我们能够清楚地表明相变的存在。我们还介绍了各个阶段的各种特征,例如动态生成的配置维度、级联对称破坏和参数零限制,以讨论对规范张量模型的一些影响。并使我们能够清楚地表明相变的存在。我们还介绍了各个阶段的各种特征,例如动态生成的配置维度、级联对称破坏和参数零限制,以讨论对规范张量模型的一些影响。
更新日期:2020-07-01
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