无穷格子系统的新型周期行波解 |
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引用本文: | 花杰,沈自飞.无穷格子系统的新型周期行波解[J].浙江师范大学学报(自然科学版),2012(3):246-251. |
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作者姓名: | 花杰 沈自飞 |
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作者单位: | 浙江师范大学数理与信息工程学院 |
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基金项目: | 国家自然科学基金资助项目(10971194) |
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摘 要: | 研究了无穷格子系统q(n)+f'(g(n))=V^t(g(n+1)-g(n))-V^t(g(n)-g(n-1)),n∈Z周期行波解的存在性.其中:q(n)=q(n,t)是第n个质点在t时刻的坐标;f表示质点的位势函数;V表示相邻2个质点间的相互作用函数.应用山路定理和环绕定理,获得了该系统新型周期行波解的存在性定理.
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关 键 词: | 无穷维哈密顿系统 行波 周期运动 山路定理 环绕定理 |
New type periodic travelling wave solutions of the infinite lattice systems |
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Institution: | HUA Jie,SHE Zifei(College of Mathematics,Physics and Information Engineering,Zhejiang Normal University,Jinhua Zhejiang 321004,China) |
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Abstract: | It was focused on the infinite lattice systemsq··(n)+f ′(q(n))=V′(q(n+1)-q(n))-V′(q(n)-q(n-1)),n∈Z,where q(n)=q(n,t) denoted the coordinate of n-th particle at time t,f a potential function and V the potential of interaction between n-th and(n-1)-th particles.The existence of new type periodic travelling wave solutions was established by mountain pass theorem and link theorem. |
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Keywords: | infinite dimensional Hamiltonian systems travelling waves periodic motion mountain pass theorem link theorem |
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