%0 Journal Article %A Castrillón López, Marco %A Muñoz Masqué, Jaime %T Hamiltonian structure of gauge-invariant variational problems %D 2012 %@ 1095-0761 %U https://hdl.handle.net/20.500.14352/44008 %X Let C→M be the bundle of connections of a principal bundle on M . The solutions to Hamilton–Cartan equations for a gauge-invariant Lagrangian density Λ on C satisfying a weak condition of regularity, are shown to admit an affine fibre-bundle structure over the set of solutions to Euler–Lagrange equations for Λ . This structure is also studied for the Jacobi fields and for the moduli space of extremals. %~