We review recent results obtained in [14] on weak turbulence of shear-Alfvén waves in the limit of strongly anisotropic pulsations that are elongated along a strong external magnetic field. The kinetic equation for energy is presented at the level of three-wave interactions. It is in agreement with the Galtier et al. [13] formulation of the full three–dimensional helical case when taking the pr...

In a new experiment at the Final Focus Test Beam at SLAC a low-emittance 46.6-GeV electron beam is brought into collision with terawatt pulses of 1054 nm or 527 nm wavelength from a Nd:glass laser. Peak laser intensities of 10 W/cm have been achieved corresponding to a value of 0.6 for the parameter = eE=m!0c. In this case an electron that crosses the center of the laser pulse has near-unit int...

We study by numerical simulations on a lattice the behaviour of the gauge–invariant two– point correlation functions of the gauge–field strengths across the deconfinement phase transition, both for the pure–gauge SU(3) theory and for full QCD with two flavours. Quenched data agree within errors with previous determinations, but have much higher statistics. A best–fit analysis of the data has be...

Results of a numerical simulation are presented to determine the feasibility of estimating the location and strength of a wake vortex from imperfect in-situ measurements. These estimates could be used to provide information to a pilot on how to avoid a hazardous wake vortex encounter. An iterative algorithm based on the method of secants was used to solve the four simultaneous equations describ...

Magnetorheological (MR) fluids are field-responsive suspensions of magnetizable particles which rheological properties can be dramatically altered by applying external magnetic fields (Phulé and Ginder 1998). Under the presence of a magnetic field, anisotropic chainlike structures result from field-induced particle magnetization as a consequence of the permeability mismatch between particle and...

Field correlators are expressed using background field formalism through the gluelump Green's functions. The latter are obtained in the path integral and Hamiltonian formalism. As a result behaviour of field correlators is obtained at small and large distances both for perturbative and nonperturbative parts. The latter decay exponentially at large distances and are finite at x = 0, in agreement...

The distribution of magnetic eld magnitudes is derived for the special case of a constant mean eld and uncorrelated components having Gaussian distributions. Of the three cases considered{ isotropic, transverse, and axisymmetric, the latter most closely resembles a lognormal distribution, when the parallel variance is less than the perpendicular variance. Thus, a normally distributed, non-inter...

Field correlators are expressed using background field formalism through the gluelump Green's functions. The latter are obtained in the path integral and Hamiltonian formalism. As a result behaviour of field correlators D and D 1 is obtained at small and large distances both for perturbative and nonperturbative parts. Nonperturbative D(x) and D 1 (x) decay exponentially at large distances and a...