@article {2014, title = {Donagi{\textendash}Markman cubic for the generalised Hitchin system}, year = {2014}, abstract = {Donagi and Markman (1993) have shown that the infinitesimal period map for an algebraic completely integrable Hamiltonian system (ACIHS) is encoded in a section of the third symmetric power of the cotangent bundle to the base of the system. For the ordinary Hitchin system the cubic is given by a formula of Balduzzi and Pantev. We show that the Balduzzi{\textendash}Pantev formula holds on maximal rank symplectic leaves of the G-generalised Hitchin system.}, keywords = {Generalized Hitchin system, Donagi-Markman cubic, algebraically completely integrable systems, moduli space of Higgs G-bundles}, url = {http://hdl.handle.net/1963/7253}, author = {Ugo Bruzzo and Peter Dalakov} }