Search found 5 matches
- 05 Nov 2019, 08:23
- Forum: HowTos and FAQ for TeNPy
- Topic: N_sweeps_check & unit cell in infinite dmrg
- Replies: 3
- Views: 4473
Re: N_sweeps_check & unit cell in infinite dmrg
Thank you for your reply. I was a bit late to check it. As you mentioned above, 'nomr_error' is larger than 1.00e-05 and "UserWarning" pops up when 'N_sweeps_check'=1. On the other hand, the case of 'N_sweeps_check'=100 is not. In addition, while checking dmrg_params in tenpy.algorithms.dm...
- 21 Oct 2019, 03:36
- Forum: HowTos and FAQ for TeNPy
- Topic: N_sweeps_check & unit cell in infinite dmrg
- Replies: 3
- Views: 4473
N_sweeps_check & unit cell in infinite dmrg
Hi. I'm using the infinite dmrg in your TeNPy to simulate the spin-1 chain in the external field. and I fix the length of unit cell as 20 (L=20) When 'N_sweeps_check'= 10(default) in the gapless phase, the ground state does not converge very well (other dmrg_params are also default except 'chi_max'=...
- 18 Jul 2019, 02:17
- Forum: HowTos and FAQ for TeNPy
- Topic: Entanglement Entropy in 1D spin-1 XXZ chain
- Replies: 4
- Views: 6569
Re: Entanglement Entropy in 1D spin-1 XXZ chain
Thank you for your kindness,
I finally comprehend what you want to say for Q1.
Moreover, I overcome the problem for the different bond dimension as I tune the "dmrg_params" appropriately.
So, thank you again~
I finally comprehend what you want to say for Q1.
Moreover, I overcome the problem for the different bond dimension as I tune the "dmrg_params" appropriately.
So, thank you again~
- 12 Jul 2019, 02:34
- Forum: HowTos and FAQ for TeNPy
- Topic: Entanglement Entropy in 1D spin-1 XXZ chain
- Replies: 4
- Views: 6569
Re: Entanglement Entropy in 1D spin-1 XXZ chain
Thank you so much to reply my questions. First of all, the last sentence (' This you could~ smaller.') in your answer for Q1 is not clear for me. Secondly, for Q2, I understand psi.get_SL(i) and psi.get_SR(i) are coincide with the singular value matrices for the left and right of site i, respectivel...
- 05 Jul 2019, 08:52
- Forum: HowTos and FAQ for TeNPy
- Topic: Entanglement Entropy in 1D spin-1 XXZ chain
- Replies: 4
- Views: 6569
Entanglement Entropy in 1D spin-1 XXZ chain
Hello~ I’m a everyday user of tenpy whose last update was 6th January. I use the iDMRG method and the system is 1D spin-1 XXZ chain: model_params = dict(S=1, L=2, Jx=1., Jy=1., Jz=Jz, D=0, bc_MPS='infinite', conserve='best', verbose=0) M = SpinChain(model_params) product_state = ["up"] * M...