Probabilistic low-rank factorization accelerates tensor network simulations of critical quantum many-body ground states.
basic_science · Level V
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- Record sourced from PubMed, PMID 29448399.
- Also identified by DOI 10.1103/PhysRevE.97.013301.
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Abstract
We provide evidence that randomized low-rank factorization is a powerful tool for the determination of the ground-state properties of low-dimensional lattice Hamiltonians through tensor network techniques. In particular, we show that randomized matrix factorization outperforms truncated singular value decomposition based on state-of-the-art deterministic routines in time-evolving block decimation (TEBD)- and density matrix renormalization group (DMRG)-style simulations, even when the system under study gets close to a phase transition: We report linear speedups in the bond or local dimension of up to 24 times in quasi-two-dimensional cylindrical systems.