Dear All,
I have a question about the stiffness measured in direct loop QMC. I consider hard-core bosons, when the stiffness is the superfluid. I find its defination: <W^2_x+W^2_y>/2t\beta L, where W_x(y) is the winding number along the x or y direction. Suppose I have square lattice. If next nearest neighbor hopping is included with amplitude t', is its contribution is included in the code?
Also if the lattice is two-leg ladder with NN and NNN hopping (the amplitudes are t and t'), the superfluid is along one direction. Is the contribution from the NN and NNN hoppings included?
Sincerely,
Huaiming Guo
Yes, it includes all terms
On 24 Sep 2015, at 15:13, 郭怀明 hmguo@buaa.edu.cn wrote:
Dear All,
I have a question about the stiffness measured in direct loop QMC. I consider hard-core bosons, when the stiffness is the superfluid. I find its defination: <W^2_x+W^2_y>/2t\beta L, where W_x(y) is the winding number along the x or y direction. Suppose I have square lattice. If next nearest neighbor hopping is included with amplitude t', is its contribution is included in the code?
Also if the lattice is two-leg ladder with NN and NNN hopping (the amplitudes are t and t'), the superfluid is along one direction. Is the contribution from the NN and NNN hoppings included?
Sincerely,
Huaiming Guo
comp-phys-alps-users@lists.phys.ethz.ch