295 citations · 1.9k across the 43 of their papers we have counts for
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cond-mat.quant-gas2011★ 42 cited
Time reversal symmetry breaking of -orbital bosons in a one-dimensional optical lattice
Xiaopeng Li, Zixu Zhang, W. Vincent Liu
We study bosons loaded in a one-dimensional optical lattice of two-fold -orbital degeneracy at each site. Our numerical simulations find an anti-ferro-orbital p+ip, a ho…
cond-mat.quant-gas2011★ 22 cited
Effective action approach to the p-band Mott insulator and superfluid transition
Xiaopeng Li, Erhai Zhao, W. Vincent Liu
Motivated by the recent experiment on p-orbital band bosons in optical lattices, we study theoretically the quantum phases of Mott insulator and superfluidity in two-dimensions. Th…
cond-mat.quant-gas2011★ 9 cited
Stripe, checkerboard, and liquid-crystal ordering from anisotropic p-orbital Fermi surfaces in optical lattices
Zixu Zhang, Xiaopeng Li, W. Vincent Liu
We study instabilities of single-species fermionic atoms in the p-orbital bands in two-dimensional optical lattices at noninteger filling against interactions. Charge density wave…