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Variational Benchmarks for Quantum Many-Body Problems

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arxiv 2302.04919 v2 pith:VTZ6FKAR submitted 2023-02-09 quant-ph cond-mat.str-elphysics.comp-ph

classification quant-phcond-mat.str-elphysics.comp-ph
keywords quantumvariationalaccuracymany-bodyproblemsapproachesassesscomputational
verification ladder T0 review T1 audit T2 compute T3 formal
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The continued development of computational approaches to many-body ground-state problems in physics and chemistry calls for a consistent way to assess its overall progress. In this work, we introduce a metric of variational accuracy, the V-score, obtained from the variational energy and its variance. We provide an extensive curated dataset of variational calculations of many-body quantum systems, identifying cases where state-of-the-art numerical approaches show limited accuracy, and future algorithms or computational platforms, such as quantum computing, could provide improved accuracy. The V-score can be used as a metric to assess the progress of quantum variational methods toward a quantum advantage for ground-state problems, especially in regimes where classical verifiability is impossible.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Probing Quantum Spin Systems with Kolmogorov-Arnold Neural Network Quantum States

    quant-ph 2025-06 conditional novelty 6.0 of 10

    SineKAN, a Kolmogorov-Arnold network with sinusoidal activations, accurately represents ground states of 1D spin chains and outperforms RBM, LSTM, and MLP neural quantum states in the J1-J2 model.

  2. Pauli Propagation: A Computational Framework for Simulating Quantum Systems

    quant-ph 2025-05 conditional novelty 5.0 of 10

    Pauli propagation, a classical method that evolves Pauli operators through quantum circuits, is presented as a unified algorithmic framework together with the Julia package PauliPropagation.jl that implements it.

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