Gauge invariances of higher derivative Maxwell-Chern-Simons field theory   -- a new Hamiltonian approach
  A new method of abstracting the independent gauge invariances of higher derivative systems, recently introduced in [1], has been applied to higher derivative field theories. This has been discussed taking the extended Maxwell-Chern-Simons model as an example. A new Hamiltonian analysis of the model is provided. This Hamiltonian analysis has been used to construct the independent gauge generator. An exact mapping between the Hamiltonian gauge transformations and the U(1) symmetries of the action has been established. 
Pradip Mukherjee, Biswajit Paul
hep-th