Asymmetric fluctuation-relaxation paths in FPU models
  A recent theory by Bertini, De Sole, Gabrielli, Jona-Lasinio and Landim predicts a temporal asymmetry in the fluctuation-relaxation paths of certain observables of nonequilibrium systems in local thermodynamic equilibrium. We find temporal asymmetries in the fluctuation-relaxation paths of a form of local heat flow, in the nonequilibrium FPU-$\zb$ model of Lepri, Livi and Politi. 
C.Giberti, L.Rondoni, C.Vernia