Non-Exponential Relaxation Time Scales in Disordered Systems: an   Application to Protein Dynamics
  We study the dynamics of an heteropolymeric chain relaxing toward a new equilibrium configuration after the action of an external perturbation. We compare the results from Monte Carlo simulations with the results of a Langevin normal mode decomposition. We discuss, for sake of comparison, the case of an ordered homopolymeric chain. 
G. Iori, E. Marinari and G. Parisi