TeNPy Forum

Thank you very much for your quick reply and your explanations. Regarding point 3, Yes I had something different in mind. If now I understand correctly, the chi_list option acts over the entire loop of temperatures, and I can change the bond dimension after a certain number of dt steps. Is my unders...

Hi everyone, I am currently working on finite temperature simulations using the purification approach in TeNPy. I have tried both the applyMPO and TEBD algorithms to perform imaginary time evolution on a purified MPS and I have some questions. 1) I didn't quite get the following line in 'II'-order a...

Hi Johannes, I think that the result is wrong by making a comparison with this article: https://doi.org/10.1103/PhysRevLett.118.157602 In this case they are using GFMC to simulate a system of one or more chains and calculate the quantity described above. In my case it seems to me that I continue to ...

Hello, I'm trying to calculate the expectation value of the charge parity operator. I'm working with the Bose-Hubbard model and in 1D I'm able to correctly compute the expectation value of the operator O(r) = \prod_{i=0}^{r-1} \exp(i\pi(n_{i}-1)) as product of single site operators. The problem aris...