Papers › Correlation-Enhanced Neural Networks as Interpretable Variational Quantum States
Correlation-Enhanced Neural Networks as Interpretable Variational Quantum States
Agnes Valenti, Eliska Greplova, Netanel H. Lindner, Sebastian D. Huber
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Variational methods have proven to be excellent tools to approximate ground states of complex many body Hamiltonians. Generic tools like neural networks are extremely powerful, but their parameters are not necessarily physically motivated. Thus, an efficient parametrization of the wave-function can become challenging. In this letter we introduce a neural-network based variational ansatz that retains the flexibility of these generic methods while allowing for a tunability with respect to the relevant correlations governing the physics of the system. We illustrate the success of this approach on topological, long-range correlated and frustrated models. Additionally, we introduce compatible variational optimization methods for exploration of low-lying excited states without symmetries that preserve the interpretability of the ansatz.
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