A systematic construction of integrable delay-difference and delay-differential analogues of soliton equations

A systematic construction of integrable delay-difference and delay-differential analogues of soliton equations
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孤子方程可积时滞差和时滞微分类似物的系统构造

DOI:
10.1088/1751-8121/ac7f07
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发表时间:
2022
期刊:
Journal of Physics A: Mathematical and Theoretical
影响因子:
--
通讯作者:
Maruno Ken-ichi
Maruno Ken-ichi
中科院分区:
--
文献类型:
--
作者:
Nakata Kenta;Maruno Ken-ichi

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我们提出了一个系统的方法来构造可积延迟差分和延迟微分模拟已知的孤子方程,如Lotka-Volterra,户田格(TL),和sine-Gordon方程及其多孤子解。它是通过对离散KP或离散二维TL方程应用约化和延迟微分极限来实现的。每个延迟差分方程和延迟微分方程都有N孤子解,该解依赖于延迟参数,当延迟参数接近0时收敛于已知孤子方程的N孤子解.
We propose a systematic method for constructing integrable delay-difference and delay-differential analogues of known soliton equations such as the Lotka–Volterra, Toda lattice (TL), and sine-Gordon equations and their multi-soliton solutions. It is carried out by applying a reduction and delay-differential limit to the discrete KP or discrete two-dimensional TL equations. Each of the delay-difference and delay-differential equations has the N-soliton solution, which depends on the delay parameter and converges to an N-soliton solution of a known soliton equation as the delay parameter approaches 0.
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