Solvable model of the collective motion of heterogeneous particles interacting on a sphere
نویسنده
چکیده
I propose a model of mutually interacting particles on an M -dimensional unit sphere. I derive the dynamics of the particles by extending the dynamics of the Kuramoto–Sakaguchi model. The dynamics include a natural-frequency matrix, which determines the motion of a particle with no external force, and an external force vector. The position (state variable) of a particle at a given time is obtained by the projection transformation of the initial position of the particle. The same projection transformation gives the position of the particles with the same naturalfrequency matrix. I show that the motion of the centre of mass of an infinite number of heterogeneous particles whose natural-frequency matrices are obtained from a class of multivariate Lorentz distribution is given by an M -dimensional ordinary differential equation in closed form. This result is an extension of the Ott–Antonsen theory. PACS numbers: 05.45.Xt,05.65.+b Submitted to: New J. Phys.
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