Author

Yining Zhang

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Preprint Jul 2026

Fast two-dimensional tensor-network contraction via subspace iteration

Subspace-iteration CTMRG (SI-CTMRG), a QR-based projector construction that replaces each large-matrix SVD with an SVD of a much smaller matrix, making it highly suited to GPU acceleration and yielding speedups of up to two orders of magnitude over standard CTMRG.

Yining Zhang, Philippe Corboz · 0 citations