Journal of Symplectic Geometry

Volume 6 (2008)

Number 2

Reduced Lagrangian and Hamiltonian formulations of Euler-Yang-Mills fluids

Pages: 189 – 237



Francois Gay-Balmaz

Tudor S. Ratiu


The Lagrangian and Hamiltonian structures for an ideal gauge-charged fluid are determined. Using a Kaluza-Klein point of view, the equations of motion are obtained by Lagrangian and Poisson reductions associated to the automorphism group of a principal bundle. As a consequence of the Lagrangian approach, a Kelvin-Noether theorem is obtained. The Hamiltonian formulation determines a non-canonical Poisson bracket associated to these equations.

Published 1 January 2008