4 citations · 13 across the 9 of their papers we have counts for
9 papers
Relaxation of One-dimensional Collisionless Gravitating Systems
Eric I. Barnes, Robert J. Ragan
In an effort to better understand collisionless relaxation processes in gravitational systems, we investigate one-dimensional models. Taking advantage of a Hermite-Legendre expansi…
Predicting Steady States of One-dimensional Collisionless Gravitating Systems
Robert J. Ragan, Eric I. Barnes
Building on the development of a Hermite-Legendre analysis of one-dimensional gravitating collisionless systems, we present a technique for determining the steady states of such sy…
Dynamics of One-dimensional Self-gravitating Systems Using Hermite-Legendre Polynomials
Eric I. Barnes, Robert J. Ragan
The current paradigm for understanding galaxy formation in the universe depends on the existence of self-gravitating collisionless dark matter. Modeling such dark matter systems ha…
Temperature Increase of Highly-Polarized Fermi Liquids in Spin-Echo Experiments
R. Ragan, K. Grunwald, C. Glenz
We show that there are restrictions on the maximum tipping angle that can be used without significantly raising the temperature of the He-3 distribution in high B/T spin-echo exper…
Spin-Current Relaxation Time in Spin-Polarized Heisenberg Paramagnets
R. Ragan, K. Grunwald, B. Batell
We study the spatial Fourier transform of the spin correlation function G_q(t) in paramagnetic quantum crystals by direct simulation of a 1d lattice of atoms interacting via a near…
Monte Carlo Simulations of Spin-Diffusion in a 2-D Heisenberg Paramagnet
R. Ragan, K. Grunwald, C. Glenz
We study spin diffusion and spin waves in paramagnetic quantum crystals (solid He-3, for example) by direct simulation of a square lattice of atoms interacting via a nearest-neighb…