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cond-mat.str-el2008★ 60 cited
On the sign structure of doped Mott insulators
K. Wu, Z. Y. Weng, J. Zaanen
We demonstrate that the sign structure of the t-J model on a hypercubic lattice is entirely different from that of a Fermi gas, by inspecting the high temperature expansion of the…
cond-mat.str-el2007★ 34 cited
Quantum Antiferromagnetism of Fermions in Optical Lattices with Half-filled p-band
Kai Wu, Hui Zhai
We study Fermi gases in a three-dimensional optical lattice with five fermions per site, i.e. the s-band is completely filled and the p-band with three-fold degeneracy is half fill…