Using the framework of the grand canonical ensemble the effects of a two (or three) dimensional confinement (harmonic) potential on the magnetic properties of an ideal electron gas are investigated. The high temperature results for the magnetic moment obtained by Felderhof and Raval are...

The one-dimensional anisotropic XY model with antisymmetric nearest-neighbour interactions (Dzyaloshinsky interactions) in the presence of a magnetic field B in the z direction is investigated. Special attention is given to the critical behaviour of the system. In the ground state, the...

The range of applicability of the mean spherical approximation to a primitive-model electrolyte is extended to allow for stronger Coulomb coupling. The new terms in the approximation are extracted from the HNC formalism, which is adequate for strongly coupled Coulomb systems. The new...

Analytical expressions for the transport coefficients of liquids based on the corrected Enskog theory have been used in order to determine the self-diffusion coefficient (D) for molecular liquids as a function of density and temperature. The liquids considered are those composed of linear...

It is shown that the integral of <{P(rτ), P(r')}>· n̂ as a function of r over a volume Ve bounded by an equi-potential is independent of r' and of Ve and is determined solely by [ϵ(ω)−1] · n̂ provided the dielectric constant is local and that Ve is of macroscopic dimensions.

Experimental measurements of self-diffusion of Kr in Kr-CH4 mixture, at very low Kr concentration and at constant temperature of 203 K, are reported as a function of density in the density range 0ϱ/ϱc2. The experimental data are discussed together with those of self- diffusion of Kr and CH4,...

The Generator Coordinate Method is applied to construct a boson representation of the energy of a S = 12 ferromagnet near its ground-state. Considering one generator coordinate per lattice site the resulting representation coincides with the one obtained starting from the Dirac-Heisenberg...

A class of one-dimensional, locally-nonlinear, dispersive Hamiltonians is defined, which includes both the sine Gordon and ø4 models. A transfer integral operator technique is used to investigate the classical statistical mechanics for this class, and several universality and scaling properties...

Various topological configurations of gauge fields are discussed from a unified point of view which emphasizes the notion of almost pure gauges. These configurations generate a nontrivial entropy S in the Feynman functional integral, thus making the free action Θ = I − g2S rather than the...

The role of the Racah operators in the diagrammatic calculations is discussed. The standard operators cannot be totally eliminated from the calculations. Using the diagrammatic methods for the Racah and standard operators the equations for the temperature of the second order critical points for...