Spectral Properties near the Mott Transition in the One-Dimensional Hubbard Model

Details Spectral Properties near the Mott Transition in the One-Dimensional Hubbard Model Spectral Properties near the Mott Transition in the One-Dimensional Hubbard Model

2010-07-21

arxiv.org/abs/1007.3547v2

Phys. Rev. Lett. 105, 106402 (2010)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 2 figures

Scientific paper

10.1103/PhysRevLett.105.106402

Single-particle spectral properties near the Mott transition in the one-dimensional Hubbard model are investigated by using the dynamical density-matrix renormalization group method and the Bethe ansatz. The pseudogap, hole-pocket behavior, spectral-weight transfer, and upper Hubbard band are explained in terms of spinons, holons, antiholons, and doublons. The Mott transition is characterized by the emergence of a gapless mode whose dispersion relation extends up to the order of hopping t (spin exchange J) in the weak (strong) interaction regime caused by infinitesimal doping.

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