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Added MPO compression for Finite and Infinite MPO Hamiltonians - #458

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TymoteuszTula wants to merge 5 commits into
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TymoteuszTula wants to merge 5 commits into
QuantumKitHub:mainfrom
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@TymoteuszTula

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Added a function "mpo_compression" that is working both for FiniteMPOHamiltonian and InfiniteMPOHamiltonian. It performs a compression algorithms defined in https://arxiv.org/abs/1909.06341.

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github-actions Bot commented Jul 13, 2026 •

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Your PR no longer requires formatting changes. Thank you for your contribution!

@codecov

codecov Bot commented Jul 13, 2026 •

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Codecov Report

❌ Patch coverage is 0% with 385 lines in your changes missing coverage. Please review.

Files with missing lines Patch % Lines
src/operators/mpocompression.jl 0.00% 385 Missing ⚠️
Files with missing lines Coverage Δ
src/MPSKit.jl 100.00% <ø> (ø)
src/operators/mpocompression.jl 0.00% <0.00%> (ø)

... and 81 files with indirect coverage changes

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@lkdvos

lkdvos commented Oct 12, 2026

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Thanks a lot for this work, @TymoteuszTula! I've continued it in #539: your commits are kept there (rebased on main), and the infinite compression is integrated with the existing left_canonicalize!/right_canonicalize! + SvdCut machinery. Closing in favor of #539 — feedback there is very welcome.

@lkdvos lkdvos closed this Oct 12, 2026
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3 participants