Non-Standard Bose-Hubbard Model with State-Dependent Tunneling (D. González Cuadra)

  • Date: Sep 6, 2017
  • Time: 11:30 AM - 12:30 PM (Local Time Germany)
  • Speaker: Daniel González Cuadra
  • ICFO - The Institute of Photonic Sciences, Castelldefels, Spain
  • Room: New Lecture Hall, Room B 0.32
  • Host: MPQ, Theory Division
Non-standard Bose-Hubbard models are relevant for the study of strongly correlated quantum physics thanks to their rich phase diagram and the possibility to simulate them using ultracold atoms in optical lattices.

In this talk, I will present a model where the tunnelling coefficient of bosons between neighboring sites depends on the state of 1/2-spin particles sitting on the links. The phase diagram is analyzed using DMRG, finding non-trivial phases, including spin wave insulators and solitonic phases, where the translational invariant symmetry is broken in different manners. Finally, I will show how this model can be implemented using ultracold atoms interacting with fixed impurities, which can be simulated with trapped ions or neutral atoms.

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