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arXiv · 1009.4194

Jastrow-Correlated Wavefunctions for Flat-Band Lattices

Hao Wang·V. W. Scarola
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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 non-perturbative 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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Hao Wang, V. W. Scarola. 2011-06-20. Jastrow-Correlated Wavefunctions for Flat-Band Lattices. https://doi.org/10.1103/physrevb.83.245109

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