Kolmogorov-Sinai entropy for dilute gases in equilibrium
Kolmogorov-Sinai entropy for dilute gases in equilibrium
We consider the density expansion of the Kolmogorov-Sinai (KS) entropy per particle for a dilute gas in equilibrium, and use methods from the kinetic theory of gases to compute the leading term. For an equilibrium system, the KS entropy ${h}_{\mathrm{KS}}$ is the sum of all of the positive Lyapunov exponents …