TeNPy Forum

Whoa, I wasn't aware that you want to run it for non-hermitian H. Lancos implicitly assumes that H is hermitian! For that reason at least TeNPy's implementation of TDVP (which uses Lancos to do the local time evolution) does not work for that case! Dropping the hermiticity of H is in general very d...

Even though the model is originially nearest-neighbor on the periodic chain, it will have longer-range interactions in the (open-boundary) MPS - with default ordering, there is one interaction going from site 0 to site L-1, or if you use the "folded" order, most of the originally nearest-...

Newbie in TeNPy, thanks for this great py-package. :D Following above discussion, by setting "bc_x=periodic" and "order="folded"", I have tried sucessfully building a CouplingMPOModel and checking the coupling terms by the code snippet Johanes given. print("order:&...