Crossover from Bardeen-Cooper-Schrieffer to Bose-Einstein condensation and the unitary Fermi gas

M Randeria, E Taylor - Annu. Rev. Condens. Matter Phys., 2014 - annualreviews.org
The crossover from weak-coupling Bardeen-Cooper-Schrieffer (BCS) pairing to a Bose-
Einstein condensate (BEC) of tightly bound pairs, as a function of the attractive interaction in …

Cooling in strongly correlated optical lattices: prospects and challenges

DC McKay, B DeMarco - Reports on Progress in Physics, 2011 - iopscience.iop.org
Optical lattices have emerged as ideal simulators for Hubbard models of strongly correlated
materials, such as the high-temperature superconducting cuprates. In optical lattice …

Observation of spatial charge and spin correlations in the 2D Fermi-Hubbard model

LW Cheuk, MA Nichols, KR Lawrence, M Okan… - Science, 2016 - science.org
Strong electron correlations lie at the origin of high-temperature superconductivity. Its
essence is believed to be captured by the Fermi-Hubbard model of repulsively interacting …

Single-atom imaging of fermions in a quantum-gas microscope

E Haller, J Hudson, A Kelly, DA Cotta, B Peaudecerf… - Nature Physics, 2015 - nature.com
Single-atom-resolved detection in optical lattices using quantum-gas microscopes, has
enabled a new generation of experiments in the field of quantum simulation. Although such …

Observation of antiferromagnetic correlations in the Hubbard model with ultracold atoms

RA Hart, PM Duarte, TL Yang, X Liu, T Paiva… - Nature, 2015 - nature.com
Ultracold atoms in optical lattices have great potential to contribute to a better understanding
of some of the most important issues in many-body physics, such as high-temperature …

A cold-atom Fermi–Hubbard antiferromagnet

A Mazurenko, CS Chiu, G Ji, MF Parsons… - Nature, 2017 - nature.com
Exotic phenomena in systems with strongly correlated electrons emerge from the interplay
between spin and motional degrees of freedom. For example, doping an antiferromagnet is …

Direct observation of nonlocal fermion pairing in an attractive Fermi-Hubbard gas

T Hartke, B Oreg, C Turnbaugh, N Jia, M Zwierlein - Science, 2023 - science.org
The Hubbard model of attractively interacting fermions provides a paradigmatic setting for
fermion pairing. It features a crossover between Bose-Einstein condensation of tightly bound …

Spin-imbalance in a 2D Fermi-Hubbard system

PT Brown, D Mitra, E Guardado-Sanchez, P Schauß… - Science, 2017 - science.org
The interplay of strong interactions and magnetic fields gives rise to unusual forms of
superconductivity and magnetism in quantum many-body systems. Here, we present an …

Site-resolved measurement of the spin-correlation function in the Fermi-Hubbard model

MF Parsons, A Mazurenko, CS Chiu, G Ji, D Greif… - Science, 2016 - science.org
Exotic phases of matter can emerge from strong correlations in quantum many-body
systems. Quantum gas microscopy affords the opportunity to study these correlations with …

Tangent space approach for thermal tensor network simulations of the 2D Hubbard model

Q Li, Y Gao, YY He, Y Qi, BB Chen, W Li - Physical Review Letters, 2023 - APS
Accurate simulations of the two-dimensional (2D) Hubbard model constitute one of the most
challenging problems in condensed matter and quantum physics. Here we develop a …