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arXiv 1302.1377nlin.SImath-phmath.MP
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Degasperis-Procesi方程中碰撞峰子的激波产生和Painlevé性质

Shock creation and Painlevé property of colliding peakons in the Degasperis-Procesi Equation

Jacek Szmigielski, Lingjun Zhou

摘要:

Degasperis-Procesi方程(DP)是已知的几个方程之一,用于模拟重要的非线性效应,如波浪破碎和激波产生。然而,DP方程的一个特殊性质是,这两种效应可以在多峰子分析的帮助下以显式的方式进行研究。从本质上讲,这种分析允许人们将波的破碎模拟为假想粒子(峰子和反峰子)的碰撞,此后统称为多峰子。它表明,DP多峰子Painlevé属性,这意味着一个普遍的波破碎行为,多峰子只能在对碰撞,并没有多个碰撞以外,可能同时,碰撞的峰-反峰对在不同的位置。此外,它表明,每个峰-反峰子碰撞的结果,在创建一个冲击,从而使可能的多冲击现象。

英文摘要:

The Degasperis-Procesi equation (DP) is one of several equations known to model important nonlinear effects such as wave breaking and shock creation. It is, however, a special property of the DP equation that these two effects can be studied in an explicit way with the help of the multipeakon ansatz. In essence this ansatz allows one to model wave breaking as a collision of hypothetical particles (peakons and antipeakons), called henceforth collectively multipeakons. It is shown that DP multipeakons have Painlevé property which implies a universal wave breaking behaviour, that multipeakons can collide only in pairs, and that there are no multiple collisions other than, possibly simultaneous, collisions of peakon-antipeakon pairs at different locations. Moreover, it is demonstrated that each peakon-antipeakon collision results in creation of a shock thus making possible a multi shock phenomenon.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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