Fix changebonds for FiniteMPS with composite physical spaces - #514
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lkdvos
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Aug 26, 2026
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It seems some inference checks in the excitation tests broke. These seemed to pass on the previous commit here, do you think the loss of inference could be related to the BlockTensorKit updates @lkdvos? |
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It must be, I'll try and investigate that separately. In any case, this is not related here because I'm seeing these failures on other PRs as well, so will merge this one. |
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Description
Fixes #494, using the fix @lkdvos suggested there.
I added tests using the one-sided MPO-MPS application that was added for finite temperature support. Unfortunately, these don't pass due to an issue with the corresponding contractions for space types with non-trivial braiding. Changing the space type to
ComplexSpacefixes things, but it's probably better to keep usingPlanarTrivialin the tests`.I reported the issue in QuantumKitHub/BlockTensorKit.jl#68.
Checklist
julia --project=test test/runtests.jl, or the relevant subset)docs/src/)[Unreleased]indocs/src/changelog.md, if this PR is user-facing (new feature, behavior change, bug fix, deprecation, or removal)