Position and velocity space diffusion of test particles in stochastic electromagnetic fields

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dc.creatorPerri, Silvia
dc.creatorLepreti, Fabio
dc.creatorCarbone, Vincenzo
dc.creatorVulpiani, Angelo
dc.date2007-05-31
dc.date.accessioned2026-07-07T08:03:44Z
dc.date.available2026-07-07T08:03:44Z
dc.descriptionThe two--dimensional diffusive dynamics of test particles in a random electromagnetic field is studied. The synthetic electromagnetic fluctuations are generated through randomly placed magnetised ``clouds'' oscillating with a frequency $ω$. We investigate the mean square displacements of particles in both position and velocity spaces. As $ω$ increases the particles undergo standard (Brownian--like) motion, anomalous diffusion and ballistic motion in position space. Although in general the diffusion properties in velocity space are not trivially related to those in position space, we find that energization is present only when particles display anomalous diffusion in position space. The anomalous character of the diffusion is only in the non--standard values of the scaling exponents while the process is Gaussian.
dc.description10 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/0705.4610
dc.identifierhttp://arxiv.org/abs/0705.4610
dc.identifierEurophys. Lett. 78, 40003 (2007)
dc.identifierdoi:10.1209/0295-5075/78/40003
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/129690
dc.subjectStatistical Mechanics
dc.subjectChaotic Dynamics
dc.titlePosition and velocity space diffusion of test particles in stochastic electromagnetic fields
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