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- W1512455886 abstract "As a generic model describing quasi-one-dimensional Mott and Peierls insulators, we investigate the Holstein-Hubbard model for half-filled bands using numerical techniques. Combining Lanczos diagonalization with Chebyshev moment expansion we calculate exactly the photoemission and inverse photoemission spectra, and use these to establish the phase diagram of the model. While polaronic features emerge only at strong electron-phonon couplings, pronounced phonon signatures, such as multiquanta band states, can be found in the Mott insulating regime as well. In order to corroborate the Mott to Peierls transition scenario, we determine the spin- and charge-excitation gaps by a finite-size scaling analysis based on density-matrix renormalization-group calculations." @default.
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- W1512455886 date "2004-04-16" @default.
- W1512455886 modified "2023-09-25" @default.
- W1512455886 title "Quantum lattice dynamical effects on single-particle excitations in one-dimensional Mott and Peierls insulators" @default.
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- W1512455886 doi "https://doi.org/10.1103/physrevb.69.165115" @default.
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