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TZID:Europe/Paris
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BEGIN:VEVENT
UID:1-58@lptms.universite-paris-saclay.fr
DTSTART:20120620T143000Z
DTEND:20120620T153000Z
DTSTAMP:20120613T060121Z
URL:http://www.lptms.universite-paris-saclay.fr/seminars/seminaire-fluides
 -quantiques-du-lptms-layla-hormozi/
SUMMARY:Séminaire "Fluides quantiques" du LPTMS : Layla Hormozi - LPTMS\, 
 salle 201\, 2ème étage\, Bât 100\, Campus d'Orsay - 20 Juin 12 14:30
DESCRIPTION:Fractional Quantum Hall Effect of Lattice Bosons Near Commensur
 ate Flux\nLayla Hormozi (National University of Ireland in Maynooth)\nWe s
 tudy interacting bosons on a lattice in a magnetic field. When the number 
 of flux quanta per plaquette is close to a rational fraction\, the low ene
 rgy physics is mapped to a multi-species continuum model: bosons in the lo
 west Landau level where each boson is given an internal degree of freedom\
 , or pseudospin. We find that the interaction potential between the bosons
  involves terms that do not conserve pseudospin\, corresponding to umklapp
  processes\, which in some cases can also be seen as BCS-type pairing term
 s. We argue that in experimentally realistic regimes for bosonic atoms in 
 optical lattices with synthetic magnetic fields\, these terms are crucial 
 for determining the nature of allowed ground states. In particular\, we sh
 ow numerically that certain paired wavefunctions related to the Moore-Read
  Pfaffian state are stabilized by these terms\, whereas certain other wave
 functions can be destabilized when umklapp processes become strong.\n(Onli
 ne pre-print: http://arxiv.org/abs/1109.3434)
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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