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Majorana spin liquids and projective realization of SU(2) spin symmetry
Gang Chen, Andrew Essin, Michael Hermele
We revisit the fermionic parton approach to S = 1/2 quantum spin liquids with SU(2) spin rotation symmetry, and the associated projective symmetry group (PSG) classification. We po…
SU(N) magnetism in chains of ultracold alkaline-earth-metal atoms: Mott transitions and quantum correlations
Salvatore R. Manmana, Kaden R. A. Hazzard, Gang Chen +2
We investigate one dimensional SU Hubbard chains at zero temperature, which can be emulated with ultracold alkaline earth atoms, by using the density matrix renormalization gr…
Spin-orbit coupling in ordered double perovskites
Gang Chen, Leon Balents
We construct and analyze a microscopic model for insulating rock salt ordered double perovskites, with the chemical formula ABB'O, where the magnetic ion B' has a 4d or…
Quantum Magnetism with Polar Alkali Dimers
Alexey V. Gorshkov, Salvatore R. Manmana, Gang Chen +3
We show that dipolar interactions between ultracold polar alkali dimers in optical lattices can be used to realize a highly tunable generalization of the t-J model, which we refer…
Tunable Superfluidity and Quantum Magnetism with Ultracold Polar Molecules
Alexey V. Gorshkov, Salvatore R. Manmana, Gang Chen +4
By selecting two dressed rotational states of ultracold polar molecules in an optical lattice, we obtain a highly tunable generalization of the t-J model, which we refer to as the…