Search found 5 matches

by DhruvT
12 Jul 2024, 14:47
Forum: Implementations
Topic: iDMRG Convergence Issues
Replies: 1
Views: 68354

Re: iDMRG Convergence Issues

Maybe this is already quite late but are you able to obtain the ground state using iDMRG in canonical form? I expect that iDMRG cannot just converge at the critical point since it corresponds to a gapless state and thus cannot be expressed by an iMPS of finite dimension. I think that you are able to...
by DhruvT
12 Jul 2024, 14:42
Forum: Implementations
Topic: MPS.apply_local_op returns none
Replies: 0
Views: 1909

MPS.apply_local_op returns none

I am studying a problem where I have a three site unit cell consisting of two fermion sites and one bosonic site. I am interested in calculating the eigenvalues of the generalised transfer matrix to check whether the obtained ground state (using iDMRG) is symmetric under a given symmetry and to even...
by DhruvT
12 Jul 2024, 14:13
Forum: Implementations
Topic: Error bar in the calculated entanglement spectrum
Replies: 2
Views: 24181

Re: Error bar in the calculated entanglement spectrum

Thanks a lot for your reply.
I took into account the lower part of the entanglement spectrum and obtained convincing results
by DhruvT
15 Mar 2024, 16:22
Forum: HowTos and FAQ for TeNPy
Topic: Correlators using iDMRG
Replies: 1
Views: 12786

Correlators using iDMRG

I am studying a model with iDMRG and was wondering if I can extract correlation functions using iDMRG? I am interested in studying the possibility of a superconducting phase by studying the correlators. My initial lattice size is 2 (before iDMRG run). Also, is it possible to extract central charge u...
by DhruvT
04 Mar 2024, 15:46
Forum: Implementations
Topic: Error bar in the calculated entanglement spectrum
Replies: 2
Views: 24181

Error bar in the calculated entanglement spectrum

Hi, I am using iDMRG to calculate the entanglement spectrum of my model. Our model consists of three site unit cells with two sites being spin-half fermionic and one bosonic. My aim is to find the degeneracies in the entanglement spectrum to confirm our analytical calculation of the existence of an ...