ITensor / ITensor/ITensorMPS.jl
Generalize `inner(::MPO, ::MPS, ::MPO, ::MPS)`
Nobody has claimed this yet.
- Dominant language
- Julia
- Stars
- 85
- Forks
- 27
- Avg merge
- 22m
- Merged PRs (30d)
- 1
Description
Currently, inner(::MPO, ::MPS, ::MPO, ::MPS) only works for MPO and MPS with standard prime level conventions, it should be generalized to arbitrary indices.
This is helpful for PEPS as well as applications in PastaQ, such as getting the fidelity between a mixed state represented as an LPDO and a pure state (@GTorlai).
Contributor guide
No contributing guide indexed for this repository
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start at the implementation and tests for inner(::MPO, ::MPS, ::MPO, ::MPS), then inspect how standard prime-level conventions are currently assumed. Generalize the operation to arbitrary indices and verify it supports the PEPS and PastaQ mixed-state fidelity use cases described in the issue.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- julia
- Domain
- backend
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100