We consider a massless tracer particle moving in random, stationary, isotropic and divergence free velocity field. identify class of fields for which the limit laws appropriately scaled trajectory processes is non-Gaussian Rosenb

The theory of self-scaled conic programming provides a uniied framework for the theories of linear programming, semideenite programming and convex quadratic programming with convex quadratic constraints. The standard search directions for interior-point methods applied to self-scaled conic programming problems are the so-called Nesterov-Todd directions. In this article we show that these direct...

Numerical simulations of charged particle beams require an approximation to the particle distribution being simulated. We present a mathematical formalism for approximating two-dimensional (2D) particle distribution using a basis composed of scaled and translated Gauss-Hermite (STGH) functions. It is computationally efficient, because it only requires the values of the particle distribution at ...

A systematic study of particle production at large transverse momentum (pT ) with the PHENIX experiment at RHIC is shown. We demonstrate that the suppression of the yield of high pT hadrons in central Au+Au collisions compared to the scaled p+p reference persists up to highest pT for neutral pions and η mesons. A similar suppression pattern is also observed in Cu+Cu collisions at the same energ...

As device dimensions are scaled down, single event transients (SET) are increasingly affecting the reliability of integrated circuits. An SET is a transient voltage perturbation caused by an energetic particle strike at the semiconductor. This work studies the applicability of bulk built in current sensors (bulk-BICS) for SET detection in deep-submicron technologies. The bulk-BICS detects the t...

The future Compact LInear particle Collider (CLIC) under study at CERN will require to stabilize heavy electromagnets, and also to provide them some positioning capabilities. Firstly, this paper presents the concept adopted to address both requirements. Secondly, the control strategy adopted for the stabilization is studied numerically, showing that the quadrupole can be stabilized in both late...

A prototype weakly interacting massive particle (WIMP) detector system is described. The detection efficiency is much larger when the incident neutral particle flux is perpendicular to the detector plane than when it is parallel to the plane. A greatly scaled-up system based on this device would therefore be sensitive to the diurnal rotation of the “WIMP wind” produced by the solar system’s rap...

We consider many-particle diffusion in 2D colloidal suspensions with hydrodynamic interactions within a mode-coupling approach. We focus on the behaviour of the effective scaled collective diffusion coefficient DC(ρ)/D0 as a function of the density of the colloids ρ, where D0 is the single-particle diffusion coefficient. We find that DC(ρ) is strongly coupled to hydrodynamical conservation laws...

Consider a distinguished, or tagged particle in zero-range dynamics on Zd with rate g whose finite-range jump probabilities p possess a drift ∑ j jp(j) 6= 0. We show, in equilibrium, that the variance of the tagged particle position at time t is at least order t in all d ≥ 1 and at most order t in d = 1 and d ≥ 3 for a wide class of rates g. Also, in d = 1, when the jump distribution p is total...