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    Jastrow-correlated wave functions for flat-band lattices

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    Date
    2011-06-20
    Author
    Wang, H.
    Scarola, Vito W.
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    Abstract
    The electronic band structure of many compounds, e.g., carbon-based structures, can exhibit essentially no dispersion. Models of electrons in flat-band lattices define nonperturbative strongly correlated problems by default. We construct a set of Jastrow-correlated ansatz wavefunctions to capture the low energy physics of interacting particles in flat bands. We test the ansatz in a simple Coulomb model of spinless electrons in a honeycomb ribbon. We find that the wavefunction accurately captures the ground state in a transition from a crystal to a uniform quantum liquid.
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    http://hdl.handle.net/10919/25386
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    • Scholarly Works, Department of Physics [873]

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