BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Memento EPFL//
BEGIN:VEVENT
SUMMARY:"Superdiffusive transport in space and laboratory plasmas"
DTSTART:20140113T103000
DTEND:20140113T113000
DTSTAMP:20260408T020133Z
UID:7ae83d8e43169069635b2676b65305c348fbf19687d13b31f89c31e8
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Gaetano Zimbardo\nUniversita' della Calabria\, Dipartime
 nto di Fisica\, Ponte P. Bucci\, Cubo 31C 87036 Rende CS\, I\nIn the last 
 few years it has been shown that the transport of plasma particles in the 
 presence of electric and magnetic turbulence can be superdiffusive rather 
 than normal diffusive (Gaussian). The term 'superdiffusive' refers to the 
 mean square displacement of particle positions growing superlinearly with 
 time\, as compared to the normal linear growth. The so-called anomalous tr
 ansport\, which in general is comprising both subdiffusion and superdiffus
 ion\, has gained growing attention during the last two decades in many fie
 lds including laboratory plasma physics and space physics. Both anomalous 
 regimes\, i.e. sub- and superdiffusion\, are found in such plasmas by a nu
 mber of techniques. In parallel\, it has been found\, both by data analysi
 s and by numerical simulations\, that the transport of energetic particles
  in the presence of solar wind magnetic turbulence can be superdiffusive.\
 nThe theoretical description of anomalous transport in the cases of both s
 ub- and superdiffusion involves the use of a variety of tools. In this pre
 sentation we will discuss the most common theoretical approaches to superd
 iffusion\, that is the one based on fractional transport equations\, and t
 he one based on a non Guassian jump probability corresponding to Levy walk
 s. The two approaches are compared\, and we discuss which tool is most app
 ropriate to each  plasmas system. Examples of superdiffusive transport an
 d of the corresponding particle acceleration for astrophysical plasmas wil
 l be given.
LOCATION:PPB 019
STATUS:CONFIRMED
END:VEVENT
END:VCALENDAR