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Title: Machine learning predictions for local electronic properties of disordered correlated electron systems

Journal Article · · Physical Review. B
ORCiD logo [1]; ORCiD logo [2];  [2]; ORCiD logo [3];  [2]
  1. National Tsing Hua Univ., Hsinchu (Taiwan); Academia Sinica, Taipei (Taiwan); OSTI
  2. Univ. of Virginia, Charlottesville, VA (United States)
  3. National Tsing Hua Univ., Hsinchu (Taiwan); Academia Sinica, Taipei (Taiwan); National Sun Yat-sen Univ., Kaohsiun (Taiwan)

We present a scalable machine learning (ML) model to predict local electronic properties such as on-site electron number and double occupation for disordered correlated electron systems. Our approach is based on the locality principle, or the nearsightedness nature, of many-electron systems, which means local electronic properties depend mainly on the immediate environment. A ML model is developed to encode this complex dependence of local quantities on the neighborhood. We demonstrate our approach using the square-lattice Anderson-Hubbard model, which is a paradigmatic system for studying the interplay between Mott transition and Anderson localization. We develop a lattice descriptor based on the group-theoretical method to represent the on-site random potentials within a finite region. The resultant feature variables are used as input to a multilayer fully connected neural network, which is trained from data sets of variational Monte Carlo (VMC) simulations on small systems. We show that the ML predictions agree reasonably well with the VMC data. Our work underscores the promising potential of ML methods for multiscale modeling of correlated electron systems.

Research Organization:
Univ. of Virginia, Charlottesville, VA (United States)
Sponsoring Organization:
Taiwan Ministry of Science and Technology (MOST); USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0020330
OSTI ID:
1979792
Journal Information:
Physical Review. B, Journal Name: Physical Review. B Journal Issue: 3 Vol. 106; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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