[seminar] IF

[Ticijana Ban]

Poštovani,

Obavještavam Vas o održavanju seminara na Institutu za fiziku, Bijenička cesta 46, predavaonica u zgradi Mladena Paića u petak 27. srpnja 2007. u 11:00 sati.

Seminar pod naslovom Slow transport in disordered media održat će dr. Thomas Franosch s Ludwig-Maximilians Univerziteta u Minhenu. 
Kratki sažetek predavanja možete pronaći u nastavku poruke.

Srdačan pozdrav,
Ticijana Ban
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Slow transport in disordered media
 
Thomas Franosch
Arnold-Sommerfeld-Center
Ludwig-Maximilians University Munich
 
Spatial heterogeneities often give rise to intriguing slow dynamics in complex materials. Examples  constitute colloidal gels with stress-sustaining networks, or the crowded environment of the cytoplams. A minimal model that encompasses spatial disorder and slow dynamics is provided by the Lorentz model, i.e. a classical point particle explores space in the presence of a frozen array of randomly distributed hard spherical obstacles.
 
I will report on extensive molecular dynamics simulations and show that a dynamic scaling hypothesis explains the anomalous relaxation close to the localization threshold. Furthermore, I will discuss the long-time tails in the velocity autocorrelation function which have been predicted almost forty years ago, but have eluded computer simulations so far.
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