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UID:69f1b8e25d887
DTSTART:20250915T130000Z
SEQUENCE:0
TRANSP:OPAQUE
DTEND:20250915T140000Z
LOCATION:Seminar Room
SUMMARY:ICFO | THOMAS CHALOPIN
CLASS:PUBLIC
DESCRIPTION:The Hubbard model is a minimal model describing interacting par
 ticles on lattices. In the case of fermions\, it captures a wide range of 
 phenomena associated with strong electron-electron correlations\, and capt
 ures the essential physics of cuprate (high-Tc) superconductors. For boson
 s\, it features a well-known quantum phase transition between a superfluid
  (BEC) state for weak interactions and a Mott insulating state at larger i
 nteractions. In this talk\, I will discuss two recent sets of experiments 
 exploring strongly correlated states emerging in Hubbard models. First\, I
  will focus on the Fermi-Hubbard model\, explored over a wide range of dop
 ings and temperatures using a quantum gas microscope (https://arxiv.org/ab
 s/2412.17801). We specifically probe a regime where a pseudogap is known t
 o develop\, and\, through measurements of multi-point correlation function
 s up to 5th order\, we provide evidence that the pseudogap regime is assoc
 iated with the emergence of strong correlations at all order.&nbsp\;\nIn t
 he second part\, I will briefly discuss the Mott transition\, explored usi
 ng a Bose-Hubbard quantum simulator with single particle resolution in mom
 entum space (https://arxiv.org/abs/2508.21623). Notably\, we measure the f
 ull distribution function of the BEC order parameter\, recovering the intu
 itive aspects of Landau&rsquo\;s theory on phase transitions. At the same 
 time\, we reveal universal\, non-Gaussian statistics at the transition poi
 nt.&nbsp\;
DTSTAMP:20260429T075306Z
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