omega -> pi pi decay in nuclear medium
  We calculate the width for the omega -> pi pi decay in nuclear medium. Chiral dynamics and low-density approximation are used. At densities around twice the nuclear saturation density we estimate the partial width for the decay of the longitudinal mode to be of the order of a few tens of MeV, and for the transverse mode a few times less. 
W. Broniowski, W. Florkowski (INP, Cracow), and B. Hiller (Coimbra)