Shape dynamics of N point vortices on the sphere
Shape dynamics of N point vortices on the sphere
复制标题
球面上 N 点涡的形状动力学
DOI:
10.1088/1361-6544/aca50e
复制
发表时间:
2022
期刊:
影响因子:
1.7
通讯作者:
Ohsawa, Tomoki
中科院分区:
文献类型:
--
作者:
Ohsawa, Tomoki
We give a geometric account of the relative motion or the shape dynamics ofpoint vortices on the sphere exploiting the-symmetry of the system. The main idea is to bypass the technical difficulty of the-reduction by first lifting the dynamics fromto. We then perform the-reduction using a dual pair to obtain a Lie--Poisson dynamics for the shape dynamics. This Lie--Poisson structure helps us find a family of Casimirs for the shape dynamics. We further reduce the system by-symmetry to obtain a Poisson structure for the shape dynamics involving fewer shape variables than those of the previous work by Borisov and Pavlov. As an application of the shape dynamics, we prove that the tetrahedron relative equilibria are stable when all of their circulations have the same sign, generalizing some existing results on tetrahedron relative equilibria of identical vortices.
登录
查看更多内容
DOI:
--
发表时间:
2003
期刊:
影响因子:
--
作者:
F. Laurent
通讯作者:
F. Laurent
DOI:
--
发表时间:
2005
期刊:
影响因子:
--
作者:
F. Laurent;J. Montaldi;M. Roberts
通讯作者:
M. Roberts
DOI:
--
发表时间:
2019
期刊:
The Journal of Geometric Mechanics
影响因子:
--
作者:
Paul Skerritt;Cornelia Vizman
通讯作者:
Cornelia Vizman
DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
V. Meleshko;P. Newton;V. L. Ostrovs’kyi
通讯作者:
V. L. Ostrovs’kyi
影响因子:
2.9
作者:
L. Kurakin
通讯作者:
L. Kurakin