Random spin distributions and the diffusion equation

Diffusion equation and spin drag in spin-polarized transport

A Diffusion Equation Approach to Spin Diffusion in Biomolecules

A theoretical description of ‘H‘H dipolar nuclear spin relaxation in a multispin system has been worked out by forming a diffusion equat ion for a one-dimensional chain of equidistant spins. The spin-diffusion equat ion is formed from first principles by assuming nearest neighbor interactions for a molecule undergoing isotropic random reorientation. This equat ion descr ibes dilfusion only in t...

Spin and Isospin Asymmetry, Equation of State and Neutron Stars

In the present work, we have obtained the equation of state for neutron star matter considering the in uence of the ferromagnetic and antiferromagnetic spin state. We have also investigated the structure of neutron stars. According to our results, the spin asymmetry stiens the equation of state and leads to high mass for the neutron star.

Fractional Diffusion Processes : Probability Distributions and Continuous Time Random

A physical-mathematical approach to anomalous diffusion may be based on generalized diffusion equations (containing derivatives of fractional order in space or/and time) and related random walk models. By the space-time fractional diffusion equation we mean an evolution equation obtained from the standard linear diffusion equation by replacing the second-order space derivative with a Riesz-Fell...

Ordered Random Variables from Discontinuous Distributions

In the absolutely continuous case, order statistics, record values and several other models of ordered random variables can be viewed as special cases of generalized order statistics, which enables a unified treatment of their theory. This paper deals with discontinuous generalized order statistics, continuing on the recent work of Tran (2006). Specifically, we show that in general neither re...