conformal quantum field theory, we calculate the asymptotics of correlation functions for the
one-dimensional Hubbard model in the repulsive regime in the presence of an external
magnetic field. The critical exponents are given in terms of a dressed charge matrix that is
defined in terms of a set of integral equations obtained from the Bethe-Ansatz solution for the
Hubbard model. An interpretation of this matrix in terms of thermodynamical coefficients is …