The Vlasov equation and the Hamiltonian Mean-Field model
The Vlasov equation and the Hamiltonian Mean-Field model
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Vlasov 方程和哈密顿平均场模型
DOI:
10.1016/j.physa.2006.01.005
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发表时间:
2005
影响因子:
3.3
通讯作者:
Y. Yamaguchi
中科院分区:
文献类型:
--
作者:
J. Barr'e;F. Bouchet;T. Dauxois;S. Ruffo;Y. Yamaguchi
We show that the quasi-stationary states of homogeneous (zero magnetization) states observed in the N-particle dynamics of the Hamiltonian mean-field (HMF) model are nothing but Vlasov stable homogeneous states. There is an infinity of Vlasov stable homogeneous states corresponding to different initial momentum distributions. Tsallis q-exponentials in momentum, homogeneous in angle, distribution functions are possible, however, they are not special in any respect, among an infinity of others. All Vlasov stable homogeneous states lose their stability because of finite N effects and, after a relaxation time diverging with a power-law of the number of particles, the system converges to the Boltzmann–Gibbs equilibrium.
DOI:
--
发表时间:
2004
期刊:
Ann. Probab. 32
影响因子:
--
作者:
Hiromitsu Suetani;Takehiko Horita;Shin Mizutani;T.Funaki
通讯作者:
T.Funaki