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arXiv 2001.03749hep-thhep-lat
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玻色BMN矩阵模型中的约束相变

The Confining Transition in the Bosonic BMN Matrix Model

Yuhma Asano, Samuel Kováčik, Denjoe O'Connor

摘要:

研究了在三维球面上紧化的四维最大超对称Yang-Mills理论的玻色扇区降维后得到的质量变形Yang-Mills矩阵模型中的限制/解除限制相变,即玻色BMN模型. $1/D$(其中$D$表示矩阵的数量)展开表明该模型可能有两个紧密分离的跃迁。然而,使用二阶晶格公式的模型,我们发现,对于小的质量参数值,$μ=2$,这两个表观临界温度合并在大$N$,只留下一个弱的一阶相变,与最近的数值结果$μ=0$(玻色子BFSS模型)。

英文摘要:

We study the confining/deconfining phase transition in the mass deformed Yang-Mills matrix model which is obtained by the dimensional reduction of the bosonic sector of the four-dimensional maximally supersymmetric Yang-Mills theory compactified on the three sphere, i.e. the bosonic BMN model. The $1/D$ (with $D$ the number of matrices) expansion suggests that the model may have two closely separated transitions. However, using a second order lattice formulation of the model we find that for the small value of the mass parameter, $μ=2$, those two apparent critical temperatures merge at large $N$, leaving only a single weakly first-order phase transition, in agreement with recent numerical results for $μ=0$ (the bosonic BFSS model).

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