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Solving Statistical Mechanics Using Variational Autoregressive Networks

Wu, Dian ; Wang, Lei ; Zhang, Pan

Physical review letters, 2019-03, Vol.122 (8), p.080602-080602, Article 080602 [Periódico revisado por pares]

United States: American Physical Society

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  • Título:
    Solving Statistical Mechanics Using Variational Autoregressive Networks
  • Autor: Wu, Dian ; Wang, Lei ; Zhang, Pan
  • Assuntos: Free energy ; Ising model ; Neural networks ; Parameter estimation ; Statistical analysis ; Statistical mechanics ; Statistical methods ; Two dimensional models
  • É parte de: Physical review letters, 2019-03, Vol.122 (8), p.080602-080602, Article 080602
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
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  • Descrição: We propose a general framework for solving statistical mechanics of systems with finite size. The approach extends the celebrated variational mean-field approaches using autoregressive neural networks, which support direct sampling and exact calculation of normalized probability of configurations. It computes variational free energy, estimates physical quantities such as entropy, magnetizations and correlations, and generates uncorrelated samples all at once. Training of the network employs the policy gradient approach in reinforcement learning, which unbiasedly estimates the gradient of variational parameters. We apply our approach to several classic systems, including 2D Ising models, the Hopfield model, the Sherrington-Kirkpatrick model, and the inverse Ising model, for demonstrating its advantages over existing variational mean-field methods. Our approach sheds light on solving statistical physics problems using modern deep generative neural networks.
  • Editor: United States: American Physical Society
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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