Schematic of the system for a single atom: shown are the wall, atom, and piston at positions 0, , and . The velocities of the atom and piston are and .
Entropy per atom versus the time : (a) initial state randomly chosen from the entire state space; (b) initial state randomly chosen from the subspace .
Momentum distribution of the atoms after starting in state and evolving the system to time : (a) , (b) , and (c) . For comparison, the Maxwell distribution is also plotted on each graph.
Periodic oscillations of the piston: shown is versus the time . The points are from a simulation of the model; the solid line is the theoretical prediction.
Article metrics loading...
Full text loading...