Relaxational Modes and Aging in the Glauber Dynamics of the   Sherrington-Kirkpatrick Model
  The relaxational modes and aging of the Glauber dynamics of the mean-field spin-glass model, SK model, are studied by a numerical diagonalization technique and Monte Carlo simulations. We found that the aging process of the model is understood as hierarchical growth of quasi-equilibrium domain in the phase-space. 
Hajime Yoshino, Koji Hukushima and Hajime Takayama