Fluctuation, Dissipation and the Arrow of Time
  The recent development of the theory of fluctuation relations has led to new insights into the ever-lasting question of how irreversible behavior emerges from time-reversal symmetric microscopic dynamics. We provide an introduction to fluctuation relations, examine their relation to dissipation and discuss their impact on the arrow of time question. 
Michele Campisi and Peter H\"anggi
physics.pop-ph cond-mat.stat-mech