arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1909.01992hep-th
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紧子的散射

Scattering of compact oscillons

F. M. Hahne, P. Klimas, J. S. Streibel, W. J. Zakrzewski

摘要:

本文研究了(1+1)维Signum-Gordon模型中广义紧介子散射的各个方面。利用该模型的协方差,我们构造了旅行介子,并研究了它们之间的相互作用以及这些相互作用对介子初速度和相对相位的依赖性。散射过程将两个入射的光子转换成两个出射的光子,并导致产生额外的光子,这些光子以喷流状级联的形式出现。这样的级联消失的自由参数和散射过程的某些值,即使我们的模型是不可积的,类似于典型的散射过程通常观察到的可积或准可积模型。偶尔,在过程的中间阶段,我们看到了激波的发射,并且我们注意到,一般来说,出射的介子比初始的介子更多地参与了它们的发射,即它们有一个弯曲的世界线形式的边界。我们对光子散射的研究结果表明,符号戈登模型的辐射具有分形性质。

英文摘要:

We study various aspects of the scattering of generalized compact oscillons in the signum-Gordon model in (1+1) dimensions. Using covariance of the model we construct traveling oscillons and study their interactions and the dependence of these interactions on the oscillons initial velocities and their relative phases. The scattering processes transform the two incoming oscillons into two outgoing ones and lead to the generation of extra oscillons which appear in the form of jet-like cascades. Such cascades vanish for some values of free parameters and the scattering processes, even though our model is non-integrable, resemble typical scattering processes normally observed for integrable or quase-integrable models. Occasionally, in the intermediate stage of the process, we have seen the emission of shock waves and we have noticed that, in general, outgoing oscillons have been more involved in their emission than the initial ones i.e. they have a border in form of curved world-lines. The results of our studies of the scattering of oscillons suggest that the radiation of the signum-Gordon model has a fractal-like nature.

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