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TZID:Europe/Paris
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BEGIN:VEVENT
UID:1-14@lptms.universite-paris-saclay.fr
DTSTART:20120124T110000Z
DTEND:20120124T110000Z
DTSTAMP:20130418T124634Z
URL:http://www.lptms.universite-paris-saclay.fr/seminars/seminaire-du-lptm
 s-y-tourigny/
SUMMARY:Séminaire du LPTMS: Y. Tourigny - LPTMS\, salle 201\, 2ème étage
 \, Bât 100\, Campus d'Orsay - 24 Jan 12 11:00
DESCRIPTION:The Dyson-Schmidt approach to studying diffusion in a Levy envi
 ronment\nYves Tourigny\, Université de Bristol\nA diffusion may be though
 t of as a certain limit of a corresponding random walk. When the environme
 nt is random\, this limit is convenient because of the variety of analytic
 al tools that can brought to bear on its study. This talk will be concerne
 d with the approach pioneered by Bouchaud\, Comtet\, Georges and Le Doussa
 l in 1990\, which maps the diffusion problem to a disordered supersymmetri
 c quantum problem. I shall review the Dyson-Schmidt method for the calcula
 tion of the Lyapunov exponent and of the density of states when the disord
 er is modelled by a Levy process. The interpretation of these self-averagi
 ng quantities in the context of difusion will be discussed\, and a number 
 of new "solvable" cases will be presented.
LOCATION:LPTMS\, salle 201\, 2ème étage\, Bât 100\, Campus d'Orsay\, 15 
 Rue Georges Clemenceau\, Orsay\, 91405\, France
GEO:48.698185;2.181768
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  Orsay\, 91405\, France;X-APPLE-RADIUS=100;X-TITLE=LPTMS\, salle 201\, 2è
 me étage\, Bât 100\, Campus d'Orsay:geo:48.698185,2.181768
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