论文标题
7点Ziggurat I的Landau奇异性I
Landau Singularities of the 7-Point Ziggurat I
论文作者
论文摘要
我们通过等效电路理论熟悉的图形动作来计算特定四环7点图的领先（一型Landau）奇异性，该图与7点``Ziggurat''图有关。我们找到了与``heptagon符号字母''的子集的完美共识，该子集出现在平面$ \ Mathcal {n} = 4 $ super-yang-mills理论的背景下。剩下的物标符号字母在其统一的Landau奇点中找到，我们在同伴论文中解决。
We compute the leading (first-type Landau) singularities of a certain four-loop 7-point graph that is related to the 7-point ``ziggurat'' graph by the graphical moves familiar from equivalent circuit theory. We find perfect agreement with a subset of the ``heptagon symbol alphabet'' that has appeared in the context of planar $\mathcal{N}=4$ super-Yang-Mills theory. The remaining heptagon symbol letters are found in its subleading Landau singularities, which we address in a companion paper.
