Dispersive Hydrodynamics of Soliton Condensates for the Korteweg-de Vries Equation.
Dispersive Hydrodynamics of Soliton Condensates for the Korteweg-de Vries Equation.
复制标题
Korteweg-de Vries方程的孤子冷凝物的分散性流体动力学。
DOI:
10.1007/s00332-023-09940-y
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发表时间:
2023
影响因子:
3
通讯作者:
Tovbis, A.
中科院分区:
文献类型:
--
作者:
Congy, T.;El, G. A.;Roberti, G.;Tovbis, A.
We consider large-scale dynamics of non-equilibrium dense soliton gas for the Korteweg–de Vries (KdV) equation in the special “condensate” limit. We prove that in this limit the integro-differential kinetic equation for the spectral density of states reduces to the N-phase KdV–Whitham modulation equations derived by Flaschka et al. (Commun Pure Appl Math 33(6):739–784, 1980) and Lax and Levermore (Commun Pure Appl Math 36(5):571–593, 1983). We consider Riemann problems for soliton condensates and construct explicit solutions of the kinetic equation describing generalized rarefaction and dispersive shock waves. We then present numerical results for “diluted” soliton condensates exhibiting rich incoherent behaviors associated with integrable turbulence.
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影响因子:
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