TeNPy Forum

Hi everyone! I am seeing something quite confusing in the logs when I use iDMRG. I am currently studying the following Hamiltonian: H = \: - \: t_1 \sum_{\langle i,j \rangle , i<j} \left( b_i^{\dag} b_j + b_j^{\dag} b_i\right) \: - \: t_2 \sum_{\langle \langle i,j \rangle \rangle , i<j-1} \left( b_i...

Hi Johannes, thank you very much for your answer! I think I understood your suggestions and I figured out all the coding stuff. Just one thing: I tried to double check the identity k_z^{- \Delta ,j} = k_z^{\Delta ,j-2 \Delta} and it looks like it holds only sufficiently far from the boundaries of th...

Hi everyone! I'm a Master student and I'm learning to do DMRG and extract quantities of interest with Tenpy. The first steps were quite straightforward, but now I'm stuck. I'm trying to reproduce some results from this paper 2209.08815 (Bose-Hubbard chain with next nearest neighbors interaction) but...