论文标题
无孤子及其在马纳科夫系统中的碰撞
Nondegenerate Solitons and their Collisions in Manakov System
论文作者
论文摘要
最近,我们已经表明,Manakov方程可以接收一类更一般的非成绩载体孤子,除了与相同波浪数相对应的已经知道的孤子孔外,它们通常在模式中没有任何强度重新分布,而无需任何强度重新分布。在本综合论文中,我们详细讨论了报告的非成绩载体孤子的各种特殊特征。为了提出这些细节,我们通过hirota birinear方法得出了这种矢量一,二和三 - 苏里顿溶液的确切形式,并使用革兰氏决定因素以更紧凑的形式重写。独特的波数的存在使非排定基本孤子可以接收各种概况,例如双驼峰,平顶和单次驼峰结构。当两种模式的相对速度趋于零时,我们解释了基本孤子中双重驼峰结构的形成。更批判性的分析表明,非等级的基本孤子可以在适当条件下保存形状以及形状改变碰撞。当参数适当固定时,变化的碰撞发生在非孤子孤子的模式之间。然后,当波数在获得的两氧化溶液中适当限制时,我们观察到退化和非分层孤子的共存。在这种情况下,我们发现退化的孤子会在碰撞过程中引起非排效孤子的形状变化行为。通过进行合适的渐近分析,我们分析了每种碰撞方案中发生的后果。最终,我们指出,以前已知的能量交换矢量明亮的孤子(具有相同波数)的能量是新衍生的非排定孤子的特殊情况。
Recently, we have shown that the Manakov equation can admit a more general class of nondegenerate vector solitons, which can undergo collision without any intensity redistribution in general among the modes, associated with distinct wave numbers, besides the already known energy exchanging solitons corresponding to identical wave numbers. In the present comprehensive paper, we discuss in detail the various special features of the reported nondegenerate vector solitons. To bring out these details, we derive the exact forms of such vector one-, two- and three-soliton solutions through Hirota bilinear method and they are rewritten in more compact forms using Gram determinants. The presence of distinct wave numbers allows the nondegenerate fundamental soliton to admit various profiles such as double-hump, flat-top and single-hump structures. We explain the formation of double-hump structure in the fundamental soliton when the relative velocity of the two modes tends to zero. More critical analysis shows that the nondegenerate fundamental solitons can undergo shape preserving as well as shape altering collisions under appropriate conditions. The shape changing collision occurs between the modes of nondegenerate solitons when the parameters are fixed suitably. Then we observe the coexistence of degenerate and nondegenerate solitons when the wave numbers are restricted appropriately in the obtained two-soliton solution. In such a situation we find the degenerate soliton induces shape changing behavior of nondegenerate soliton during the collision process. By performing suitable asymptotic analysis we analyze the consequences that occur in each of the collision scenario. Finally we point out that the previously known class of energy exchanging vector bright solitons, with identical wave numbers, turns out to be a special case of the newly derived nondegenerate solitons.