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BEGIN:VEVENT
UID:1-209@lptms.universite-paris-saclay.fr
DTSTART:20131118T113000Z
DTEND:20131118T113000Z
DTSTAMP:20131114T132337Z
URL:http://www.lptms.universite-paris-saclay.fr/seminars/journal-club-hao-
 lee/
SUMMARY:Journal-Club : Hao Lee - LPTMS\, salle 201\, 2ème étage\, Bât 10
 0\, Campus d'Orsay - 18 Nov 13 11:30
DESCRIPTION:Multi-orbital and density-induced tunneling of boson in optical
  lattices\nHao Lee (doctorant au LPTMS)\n Article de  Dirk-Soren Luhmann
 \, Ole Jurgensen and Klaus Sengstock\, New Journal of Physics 14 ( 2012) 0
 33021\nWe show that multi-orbital and density-induced tunneling have a sig
 nificant impact on the phase diagram of bosonic atoms in opticallattices. 
 Off-site interactions lead to density-induced hopping\, the so-called bond
 -charge interactions\, which can be identified with an effective tunneling
  potential and can reach the same order of magnitude as conventional tunne
 ling. In addition\, interaction-induced higher-band processes also give ri
 se to strongly modified tunneling\, on-site and bond-charge interactions.W
 e derive an extended occupation-dependent Hubbard model with multiorbitall
 yrenormalized processes and compute the corresponding phase diagram.It sub
 stantially deviates from the single-band Bose–Hubbard model andpredicts 
 strong changes of the superfluid-to-Mott-insulator transition. In general\
 ,the presented beyond-Hubbard physics plays an essential role in bosonicla
 ttice systems and has an observable influence on experiments with tunablei
 nteractions.\n 
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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