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arXiv 2106.07129nlin.SI
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Box-Ball系统相移的路径计数分析

A Path-Counting Analysis of Phase Shifts in Box-Ball Systems

Nicholas M. Ercolani, Jonathan Ramalheira-Tsu

摘要:

在本文中,我们执行的相移现象的经典孤子元胞自动机称为盒球系统的详细分析,最终导致的陈述和证明的公式描述这种相移。这种现象自90年代以来一直被观察到,当时该系统首次由高桥和萨摩介绍,但没有明确的全球性描述超出了其观察。通过使用Gessel-Viennot-Lindström引理和路径计数参数,我们在这里提出了一个新的证明的经典相移公式的连续时间Toda晶格,发现由Moser,并使用此证明推导出一个离散时间Toda晶格模拟的相移现象。通过仔细分析盒球系统和离散时间Toda晶格之间的联系,通过热带化/去量子化的机制,我们将这个离散时间Toda晶格相移公式转化为我们的新公式的盒球系统相移。

英文摘要:

In this paper, we perform a detailed analysis of the phase shift phenomenon of the classical soliton cellular automaton known as the box-ball system, ultimately resulting in a statement and proof of a formula describing this phase shift. This phenomenon has been observed since the nineties, when the system was first introduced by Takahashi and Satsuma, but no explicit global description was made beyond its observation. By using the Gessel-Viennot-Lindström lemma and path-counting arguments, we present here a novel proof of the classical phase shift formula for the continuous-time Toda lattice, as discovered by Moser, and use this proof to derive a discrete-time Toda lattice analogue of the phase shift phenomenon. By carefully analysing the connection between the box-ball system and the discrete-time Toda lattice, through the mechanism of tropicalisation/dequantisation, we translate this discrete-time Toda lattice phase shift formula into our new formula for the box-ball system phase shift.

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