The Relevant Operators for the Hubbard Hamiltonian with a magnetic field   term
  The Hubbard Hamiltonian and its variants/generalizations continue to dominate the theoretical modelling of important problems such as high temperature superconductivity. In this note we identify the set of relevant operators for the Hubbard Hamiltonian with a magnetic field term. 
S. Alam (KEK), M. Nasir Khan and Jauhar Ali