佛山大学数学学院,广东 佛山 528000
LIU Qianle(1321244430@qq.com)
WANG Zhong(wangzh79@fosu.edu.cn)
[ "ZHU Weipeng(zhuweipeng@fosu.edu.cn)" ]
收稿:2025-07-28,
修回:2025-08-25,
录用:2025-08-25,
网络首发:2025-10-23,
纸质出版:2026-01-25
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刘千乐,王忠,朱伟鹏.受扰Calogero-Moser系统的动力学行为:适定性、稳定性和爆破[J].中山大学学报(自然科学版)(中英文),2026,65(01):157-168.
LIU Qianle,WANG Zhong,ZHU Weipeng.Dynamics of the perturbed Calogero-Moser system: well-posedness, stability and blow up[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2026,65(01):157-168.
刘千乐,王忠,朱伟鹏.受扰Calogero-Moser系统的动力学行为:适定性、稳定性和爆破[J].中山大学学报(自然科学版)(中英文),2026,65(01):157-168. DOI: 10.13471/j.cnki.acta.snus.ZR20250163.
LIU Qianle,WANG Zhong,ZHU Weipeng.Dynamics of the perturbed Calogero-Moser system: well-posedness, stability and blow up[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2026,65(01):157-168. DOI: 10.13471/j.cnki.acta.snus.ZR20250163.
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
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2.20133328
2.62466669
and initial conditions. Increasing
<math id="M2"><mi>α</mi></math>
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2.20133328
2.62466669
accelerates the convergence rate and dampens oscillatory dynamics
promoting a transition from periodic behavior to static equilibrium.
ABANOV A G , BETTELHEIM E , WIEGMANN P , 2009 . Integrable hydrodynamics of Calogero-Sutherland model: Bidirectional Benjamin-Ono equation [J]. J Phys A: Math Theor , 42 ( 13 ): 135201 .
ABANOV A G , GROMOV A , KULKARNI M , 2011 . Soliton solutions of a Calogero model in a harmonic potential [J]. J Phys A: Math Theor , 44 ( 29 ): 295203 .
CALOGERO F , 1971 . Solution of the one-dimensional <math id="M296"><mi>N</mi></math> https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=98520891&type= https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=98520890&type= 2.28600001 2.28600001 -body problems with quadratic and/or inversely quadratic pair potentials [J]. J Math Phys , 12 ( 3 ): 419 - 436 .
CASE K M , 1978 . The <math id="M297"><mi>N</mi></math> https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=98520863&type= https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=98520892&type= 2.28600001 2.28600001 -soliton solution of the Benjamin-Ono equation [J]. Proc Natl Acad Sci , 75 ( 8 ): 3562 - 3563 .
ENGLISH J M , PEGO R L , 2005 . On the solitary wave pulse in a chain of beads [J]. Proc Amer Math Soc , 133 ( 6 ): 1763 - 1768 .
FLACH S , GORBACH A V , 2008 . Discrete breathers with dissipation [M]//AKHMEDIEV N,et al. Dissipative soliton s: From optics to biology and medicine, Lect Notes Phys , 751 , Berlin : Springer .
INGIMARSON B , PEGO R L , 2024a . On long waves and solitons in particle lattices with forces of infinite range [J]. SIAM J Appl Math , 84 ( 3 ): 808 - 830 .
INGIMARSON B , PEGO R L , 2024b . Existence of solitary waves in particle lattices with power-law forces [J]. Nonlinearity , 37 ( 12 ): 125016 .
MOLERÓN M , LEONARD A , DARAIO C , 2014 . Solitary waves in a chain of repelling magnets [J]. J Appl Phys , 115 ( 18 ): 184901 .
MOSER J , 1975 . Three integrable Hamiltonian systems connected with isospectral deformations [J]. Adv Math , 16 ( 2 ): 197 - 220 .
OLSHANETSKY M A , PERELOMOV A M , 1981 . Classical integrable finite-dimensional systems related to Lie algebras [J]. Phys Rep , 71 ( 5 ): 313 - 400 .
PHILIP A R , 2019 . Soliton solutions to Calogero-Moser systems [D]. Stockholm : Royal Institute of Technology .
POLYCHRONAKOS A P , 1995 . Waves and solitons in the continuum limit of the Calogero-Sutherland model [J]. Phys Rev Lett , 74 ( 26 ): 5153 - 5157 .
STONE M , ANDUAGA I , XING L , 2008 . The classical hydrodynamics of the Calogero-Sutherland model [J]. J Phys A: Math Theor , 41 ( 27 ): 275401 .
SUTHERLAND B , 1971 . Exact results for a quantum many-body problem in one dimension [J]. Phys Rev A , 4 ( 5 ): 2019 - 2021 .
WOJCIECHOWSKI S , 1982 . The analogue of the Bäcklund transformation for integrable many-body systems [J]. J Phys A: Math Gen , 15 ( 12 ): L653 - L657 .
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