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- W2912951587 abstract "We study the ground state of the one-dimensional extended Hubbard model at half-filling using the entanglement entropy calculated by Density Matrix Renormalization Group (DMRG) techniques. We apply a novel curve fitting and scaling method to accurately identify a $2^{nd}$ order critical point as well as a Berezinskii-Kosterlitz-Thouless (BKT) critical point. Using open boundary conditions and medium-sized lattices with very small truncation errors, we are able to achieve similar accuracy to previous authors. We also report observations of finite-size and boundary effects that can be remedied with careful pinning." @default.
- W2912951587 created "2019-02-21" @default.
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- W2912951587 date "2019-05-24" @default.
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- W2912951587 title "Critical entanglement for the half-filled extended Hubbard model" @default.
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- W2912951587 doi "https://doi.org/10.1103/physrevb.99.195445" @default.
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