A linear MPS tangent-space method for open-boundary systems is derived, and a particle-resolved rank tomography is introduced to diagnose the tangent space's expressivity limits.
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cond-mat.quant-gas 1years
2026 1verdicts
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Excitation spectra and rank tomography of linear matrix product tangent spaces
A linear MPS tangent-space method for open-boundary systems is derived, and a particle-resolved rank tomography is introduced to diagnose the tangent space's expressivity limits.