Abstract: A simulation is performed aiming at checking the existence of a well defined stationary state for a two dimensional system of driven hard disks when energy dissipation takes place at the system boundaries and no bulk impurities are present.

Keywords: Chaos, Thermostats efficiency, Ergodic Hypothesis, SRB distribution, Time reversal, Fluctuation theorem, Chaotic hypothesis

G. Gallavotti, INFN, Universit\`a di Roma "La Sapienza", P. A. Moro 2, 00185, Roma, Italy
giovanni.gallavotti@roma1.infn.it

web:
http://ipparco.roma1.infn.it