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Open Access Publications from the University of California

Projected density matrix embedding theory with applications to the two-dimensional Hubbard model

  • Author(s): Wu, X;
  • Cui, ZH;
  • Tong, Y;
  • Lindsey, M;
  • Chan, GKL;
  • Lin, L
  • et al.

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Density matrix embedding theory (DMET) is a quantum embedding theory for strongly correlated systems. From a computational perspective, one bottleneck in DMET is the optimization of the correlation potential to achieve self-consistency, especially for heterogeneous systems of large size. We propose a new method, called projected DMET (p-DMET), which achieves self-consistency without needing to optimize the correlation potential. We demonstrate the performance of p-DMET on the two-dimensional Hubbard model.

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