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TZID:Europe/Paris
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BEGIN:VEVENT
UID:1-522@lptms.universite-paris-saclay.fr
DTSTART:20170608T110000Z
DTEND:20170608T120000Z
DTSTAMP:20170601T102957Z
URL:https://www.lptms.universite-paris-saclay.fr/seminars/seminaire-du-lpt
 ms-duncan-odell-seminaire-exceptionnel/
SUMMARY:Séminaire du LPTMS: Duncan O'Dell   *** séminaire exceptionnel **
 * - LPTMS\, salle 201\, 2ème étage\, Bât 100\, Campus d'Orsay - 8 Juin 
 17 11:00
DESCRIPTION:Quantum catastrophes\nDuncan O’Dell (McMaster University)\nCa
 tastrophe theory provides a unified description of a broad range of singul
 arities and defects in fields and has been applied extensively in optics. 
 A key idea is that of scale: at large scales the catastrophe appears singu
 lar but at smaller scales it is smoothed\, e.g. by wave interference. In 2
 004 Michael Berry and Mark Dennis suggested that waves might themselves di
 splay singularities which are only smoothed by the fundamental discretenes
 s of quantum field excitations (e.g. photons). In this talk I will give ex
 amples of such “quantum catastrophes” appearing in the dynamics of sim
 ple quantum systems such as a Josephson junction made from two BECs follow
 ing a quench.  I will emphasize that\, owing to the structural stability 
 of catastrophes and their scaling properties\, quantum catastrophes repres
 ent a universal aspect of quantum dynamics.\n
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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