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Group Convolutional Neural Networks Improve Quantum State Accuracy

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arxiv 2104.05085 v3 pith:VSK4ANJQ submitted 2021-04-11 quant-ph cond-mat.dis-nncond-mat.str-el

classification quant-phcond-mat.dis-nncond-mat.str-el
keywords quantumaccuracymodelsnetworksneuralbodyconvolutionalgroup
verification ladder T0 review T1 audit T2 compute T3 formal
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Neural networks are a promising tool for simulating quantum many body systems. Recently, it has been shown that neural network-based models describe quantum many body systems more accurately when they are constrained to have the correct symmetry properties. In this paper, we show how to create maximally expressive models for quantum states with specific symmetry properties by drawing on literature from the machine learning community. We implement group equivariant convolutional networks (G-CNN) \cite{cohen2016group}, and demonstrate that performance improvements can be achieved without increasing memory use. We show that G-CNNs achieve very good accuracy for Heisenberg quantum spin models in both ordered and spin liquid regimes, and improve the ground state accuracy on the triangular lattice over other variational Monte-Carlo methods.

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Forward citations

Cited by 5 Pith papers

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

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    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.

  5. Group Convolutional Neural Network for the Low-Energy Spectrum in the Quantum Dimer Model

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    Irrep-resolved GCNN variational energies indicate a 4-fold degenerate columnar ground state for V <= 0.4 in the square-lattice quantum dimer model, shifting possible plaquette or mixed ordering to 0.4 < V < 1.

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