  We study the phase diagram of QCD at finite isospin density using two flavors
of staggered quarks. We investigate the low temperature region of the phase
diagram where we find a pion condensation phase at high chemical potential. We
started a basic analysis of the spectrum at finite isospin density. In
particular, we measured pion, rho and nucleon masses inside and outside of the
pion condensation phase. In agreement with previous studies in two-color QCD at
finite baryon density we find that the Polyakov loop does not depend on the
density in the staggered formulation.
