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About: Density matrix embedding theory     Goto   Sponge   NotDistinct   Permalink

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The density matrix embedding theory (DMET) is a numerical technique to solve strongly correlated electronic structure problems. By mapping the system to a fragment plus its entangled quantum bath, the local electron correlation effects on the fragment can be accurately modeled by a post-Hartree–Fock solver. This method has shown high-quality results in 1D- and 2D- Hubbard models,and in chemical model systems incorporating the fully interacting electronic Hamiltonian, including long-range interactions.