Neural Network Solver for Small Quantum Clusters

Autor:	Walker, Nicholas, Kellar, Samuel, Zhang, Yi, Tam, Ka-Ming
Rok vydání:	2020
Předmět:	Condensed Matter - Strongly Correlated Electrons Condensed Matter - Disordered Systems and Neural Networks
Druh dokumentu:	Working Paper
Popis:	Machine learning approaches have recently been applied to the study of various problems in physics. Most of the studies are focused on interpreting the data generated by conventional numerical methods or an existing database. An interesting question is whether it is possible to use a machine learning approach, in particular a neural network, for solving the many-body problem. In this paper, we present a solver for interacting quantum problem for small clusters based on the neural network. We study the small quantum cluster which mimics the single impurity Anderson model. We demonstrate that the neural network based solver provides quantitatively accurate results for the spectral function as compared to the exact diagonalization method. This opens the possibility of utilizing the neural network approach as an impurity solver for other many body numerical approaches, such as dynamical mean field theory. Comment: 10 pages, 5 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2008.12331 Zobrazit plný text záznamu View this record from Arxiv