Lower bounds on dissipation upon coarse graining
  By different coarse-graining procedures we derive lower bounds on the total mean work dissipated in Brownian systems driven out of equilibrium. With several analytically solvable examples we illustrate how, when, and where the information on the dissipation is captured. 
A. Gomez-Marin, J. M. R. Parrondo and C. Van den Broeck