This paper presents new experimental data for the viscosity of binary mixtures of xenon with the remaining monatomic gases, helium, neon, argon, and krypton. The measurements have been performed in a high precision oscillating-disk viscometer at atmospheric pressure and within the temperature...

The density functional approach is reformulated by using the most general form of the Hohenberg-Kohn theorem based on p-particle densities. Comparison with the reduced density matrix theory is made, exhibiting fully the p-particle hierarchy of both theories. Some advantages and drawbacks of the...

Using the atomic second-quantization procedure an explicit expression is derived for the operator of exchange interaction between two atoms a and b in a state of any value of their atomic orbital and spin momenta, in the approximation of one and two pairs of exchanging electrons and without...

We consider the discrete-time dynamics of a one-locus, two-allele (two-gene) model of a genetic population experiencing natural selection in a random environment. The dynamics is described by a stochastic recursion relation. We construct hierarchies of upper and lower bounds for the nth...

We start with a given deterministic equation of motion for a set of macrovariables. Suppose that we can construct a corresponding master equation which has the following properties. In the limit of large systems the deterministic equation can be derived from the master equation for not too long...

This paper is concerned with the statistical mechanics of an hydrogenic plasma. Ions are no more randomly fixed, however the present formulation is similar to that of paper (I): starting from the “physical” problem we introduce an “ideal” problem, with an enlarged state space, defined in...

The analysis of transport coefficients based on the modified Enskog theory (MET), discussed in a previous publication, has been extended to include the self-diffusion coefficient (D) and the bulk viscosity coefficient (ηv). Specifically, calculated values according to the MET are compared with...

A method is outlined to obtain, directly in phase space, a complete set of eigenfunctions of the Liouville operator. The method is applied to quadratic lagrangians and the results are compared with the Wigner equivalents of the corresponding basic elements of the density matrix.

The spin dynamics of a classical very dilute totally disordered Heisenberg spin glass is investigated at low temperatures. At 0 K, it is supposed that the spins are in metastable equilibrium in one of a great number of possible configurations, different configurations being separated by finite...

The many-body theory by the propagator method developed by Montroll and Ward for equilibrium statistical mechanics, is reformulated to describe the electrical conductivity for an electron gas system containing impurity atoms. The theory includes electron-impurity interaction to infinite order...