受扰Calogero-Moser系统的动力学行为:适定性、稳定性和爆破OA
Dynamics of the perturbed Calogero-Moser system:well-posedness,stability and blow up
研究了一类受幂律型外势场调制的不可积双粒子Calogero-Moser系统.在粒子满足严格初始分离条件下,建立了柯西问题的局部适定性.对于适当的初始配置,局部解可通过能量守恒全局延拓;反之,负能量条件将诱发有限或无限时间爆破.当系统能量处于临界阈值时,分析了稳态解的线性(不)稳定性.数值模拟采用带自适应步长控制的四阶龙格-库塔算法,模拟结果表明:轨迹演化依幂指数α和初始条件不同,或收敛至稳态或呈现爆破.增大α值会加快收敛速度并抑制振荡动力学行为,促使系统从周期性运动向静态平衡转变.
We investigate a class of non-integrable two-particle Calogero-Moser systems modulated by a power-law external potential.The local well-posedness of the Cauchy problem is established under the strict initial separation condition for the particles.For suitably prepared initial configurations,local solutions can be extended globally via energy conservation;conversely,negative energy conditions induce(in)finite-time blowup.The linear(in)stability of stationary solutions is analyzed,with their energy serving as a threshold.Numerical investigations employ a fourth-order Runge-Kutta scheme with adaptive step-size control.Simulations demonstrate that the trajectories either converge to steady states or exhibit blowup,depending on the power exponent α and initial conditions.Increasing α accelerates the convergence rate and dampens oscillatory dynamics,promoting a transition from periodic behavior to static equilibrium.
刘千乐;王忠;朱伟鹏
佛山大学数学学院,广东 佛山 528000佛山大学数学学院,广东 佛山 528000佛山大学数学学院,广东 佛山 528000
数理科学
Calogero-Moser系统适定性爆破稳定性
Calogero-Moser systemwell-posednessblow upstability
《中山大学学报(自然科学版)(中英文)》 2026 (1)
157-168,12
Supported by National Natural Science Foundation of China(12201118)Guangdong Basic and Applied Basic Research Foundation(2023A1515010706)
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