On Ward-Takahashi identities for the Parisi spin glass
  The introduction of ``small permutations'' allows us to derive Ward-Takahashi identities for the spin-glass, in the Parisi limit of an infinite number of steps of replica symmetry breaking. The first identities express the emergence of a band of Goldstone modes. The next identities relate components of (the Replica Fourier Transformed) 3-point function to overlap derivatives of the 2-point function (inverse propagator). A jump in this last function is exhibited, when its two overlaps are crossing each other, in the special simpler case where one of the cross-overlaps is maximal. 
C. De Dominicis (SPhT, Saclay), T. Temesvari (E\"otv\"os University,   Budapest), I. Kondor (E\"otv\"os University, Budapest)