What Hath RHIC Wrought ? : The Chiral Restoration Phase Transition Found   at RHIC
  Given Brown/Rho scaling we thought of the mesons which are observed in Nambu-Jona Lasinio theory as collective modes. The pi, sigma, rho and A_1, should go smoothly through T_c as the temperature rose, going massless as T comes to T_c. 
G.E. Brown, C.-H. Lee, M. Rho