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TZID:Europe/Paris
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BEGIN:VEVENT
UID:1-442@lptms.universite-paris-saclay.fr
DTSTART:20160429T110000Z
DTEND:20160429T120000Z
DTSTAMP:20160426T113504Z
URL:http://www.lptms.universite-paris-saclay.fr/seminars/seminaire-du-lptm
 s-giovanna-morigi-seminaire-exceptionnel/
SUMMARY:Séminaire du LPTMS: Giovanna Morigi *** séminaire exceptionnel **
 * - LPTMS\, salle 201\, 2ème étage\, Bât 100\, Campus d'Orsay - 29 Avr 
 16 11:00
DESCRIPTION:Dissipation-assisted prethermalization in long-range interactin
 g atomic ensembles\nGiovanna Morigi (Universität des Saarlandes\, Allemag
 ne)\nWe theoretically characterize the semiclassical dynamics of an ensemb
 le of atoms after a sudden quench across a driven-dissipative second-order
  phase transition. The atoms are driven by a laser and interact via conser
 vative and dissipative long-range forces mediated by the photons of a sing
 le- mode cavity. These forces can cool the motion and\, above a threshold 
 value of the laser intensity\, induce spatial ordering. The relaxation dyn
 amics exhibits a long prethermalizing behaviour which is first solely domi
 nated by coherent long-range forces\, and then by their interplay with dis
 sipation. Remarkably\, this final stage is orders of magnitude slower and 
 exhibits correlations which are established by spatially-correlated noise 
 and which go beyond mean-field. This behaviour challenges the common under
 standing of the role of dissipation in the relaxation dynamics. It further
  implies that cavity cooling of an atomic ensemble into the selforganized 
 phase can require longer time scales than the typical duration of an exper
 iment.
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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