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BEGIN:VEVENT
UID:1-26@lptms.universite-paris-saclay.fr
DTSTART:20120306T110000Z
DTEND:20120306T110000Z
DTSTAMP:20120223T142912Z
URL:http://www.lptms.universite-paris-saclay.fr/seminars/seminaire-du-lptm
 s-m-colangeli-2/
SUMMARY:Séminaire du LPTMS: M. Colangeli - LPTMS\, salle 201\, 2ème étag
 e\, Bât 100\, Campus d'Orsay - 6 Mar 12 11:00
DESCRIPTION:Fluctuation-dissipation relation for chaotic non-Hamiltonian sy
 stems\nMatteo Colangeli\, Politecnico di Torino\nIn dissipative dynamical 
 systems phase space volumes contract\, on average. Therefore\, the invaria
 nt measure on the attractor is singular with respect to the Lebesgue measu
 re. As noted by Ruelle\, a generic perturbation pushes the state out of th
 e attractor\, hence the statistical features of the perturbation and\, in 
 particular\, of the relaxation\, cannot be understood solely in terms of t
 he unperturbed dynamics on the attractor. This remark seems to seriously l
 imit the applicability of the standard fluctuation dissipation procedure i
 n the statistical mechanics of nonequilibrium (dissipative) systems. Yet\,
  it will be shown that the singular character of the steady state does not
  constitute a serious limitation in the case of systems with many degrees 
 of freedom. The reason is that one typically deals with projected dynamics
 \, and these are associated with regular probability distributions in the 
 corresponding lower dimensional spaces.
CATEGORIES:seminars
LOCATION:LPTMS\, salle 201\, 2ème étage\, Bât 100\, Campus d'Orsay\, 15 
 Rue Georges Clemenceau\, Orsay\, 91405\, France
GEO:48.698185;2.181768
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=15 Rue Georges Clemenceau\,
  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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