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Showing 1–4 of 4 results
Advanced filters: Author: Federico Becca Clear advanced filters

  • Fractional magnetic excitations naturally emerge in one-dimensional spin chains. The search for fractionalization in higher dimensions has focused on frustrated systems but evidence now suggests that it can occur in simple two-dimensional antiferromagnets.

    • Federico Becca
    • Sandro Sorella
    News & Views
    Nature Physics
    Volume: 11, P: 8-9

  • Neural-Network Quantum States are highly effective in describing quantum many-body systems, but they are typically system-specific. Here the authors propose Foundation Neural-Network Quantum States, which can be applied across multiple systems simultaneously, enabling accurate estimation of challenging observables.

    • Riccardo Rende
    • Luciano Loris Viteritti
    • Giuseppe Carleo
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-12

  • Stochastic reconfiguration (SR) is a method to enhance the optimization of variational functions in quantum many-body systems but becomes impractical beyond a few thousand parameters. Here, the authors combine an alternative SR formulation with a Deep Transformer architecture with 105 parameters, achieving the best variational energy for the J1–J2 Heisenberg model on the 10 × 10 square lattice

    • Riccardo Rende
    • Luciano Loris Viteritti
    • Sebastian Goldt
    ResearchOpen Access
    Communications Physics
    Volume: 7, P: 1-8