You can't change the lattice length L but you should be able to change local chemical potentials and thus mimic the expansion of your lattice.
On 19.01.2013, at 13:52, Deepak Iyer deepak.g.iyer@gmail.com wrote:
Hi
I'm trying to quench 'L' in the TEBD code in the Bose-Hubbard model. I start with L=2 and quench to L=10. I'm interested in looking at what happens to the local occupation numbers. But the code only outputs 'Local Number' for 2 sites. I'm using an L=2 initial state to force the system into a particular initial state. I see that this is a bit ambiguous since its not clear what 'L' is midway in the quench, but is there any way I can get occupation for all 10 sites after the completion of the quench? I first quickly quench it and then hold the quench at a fixed U and L for sometime.
Thanks! Deepak