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BEGIN:VEVENT
UID:0-584@lptms.universite-paris-saclay.fr
DTSTART:20180227T113000Z
DTEND:20180227T120000Z
DTSTAMP:20180215T095919Z
URL:http://www.lptms.universite-paris-saclay.fr/seminars/seminaire-du-lptm
 s-laurent-de-forges-de-parny-2/
SUMMARY:Séminaire du LPTMS: Laurent de Forges de Parny - LPTMS\, salle 201
 \, 2ème étage\, Bât 100\, Campus d'Orsay - 27 Fév 18 11:30
DESCRIPTION:Multicomponent Bose-Hubbard Model: Nematic Order in Spinor Cond
 ensates\nLaurent de Forges de Parny (Albert-Ludwigs University of Freiburg
 \, Germany)\nSince the seminal work of D. Jaksch et al. [1]\, the motivati
 on of considering bosonic mixtures has emerged from the promising perspect
 ives of observing coexisting quantum phases\, spin-dynamics\, and quantum 
 magnetism. Recently\, ultracold bosons with effective spin degree of freed
 om allowed to engineer magnetic quantum phase transitions and non trivial 
 magnetic phases\, e.g. the nematic order\, which breaks the spin-rotation 
 symmetry without magnetic order [2].\n\nI will discuss the magnetic proper
 ties of strongly interacting spin-1 bosons in optical lattices. Employing 
 a combined strategy based on exact numerical methods (quantum Monte Carlo 
 simulations and exact diagonalization) and analytical calculations\, we ha
 ve derived the phase diagrams and characterized the phase transitions beyo
 nd the mean field description [3\,4]. Furthermore\, we have established th
 e low energy spectrum of the nematic superfluid phase and have confirmed a
  singlet-to-nematic phase transition inside the Mott insulator phase.\n\nR
 eferences:\n\n	D. Jaksch\, C. Bruder\, J. I. Cirac\, C. W. Gardiner and P.
  Zoller\, Cold Bosonic Atoms in Optical Lattices\, Phys. Rev. Lett. 81\, 3
 108 (1998)\n	T. Zibold\, V. Corre\, C. Frapolli\, A. Invernizzi\, J. Dalib
 ard and F. Gerbier\, Spin-nematic order in antiferromagnetic spinor conden
 sates\, Phys. Rev. A 93\, 023614 (2016).\n	L. de Forges de Parny\, F. Héb
 ert\, V. G. Rousseau\, and G. G. Batrouni\, Interacting spin-1 bosons in a
  two-dimensional optical lattice\, Phys. Rev. B 88\, 104509 (2013).\n	Laur
 ent de Forges de Parny\, Hongyu Yang\, and Frédéric Mila\, Anderson Tow
 er of States and Nematic Order of Spin-1 Bosonic Atoms on a 2D Lattice\, P
 hys.Rev.Lett. 113\, 200402 (2014)\n\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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