Our paper on double occupancy in one-dimensional optical lattices is now published. Here is the full reference:
L. Campo Jr., K. Capelle, C. Hooley, J. Quintanilla and V. Scarola.
“Thermal versus quantum fluctuations of optical lattice fermions.”
Phys. Rev. A 85, 033644 (2012) .
http://dx.doi.org/10.1103/PhysRevA.85.033644