Quantum phases of hard-core bosons in a frustrated honeycomb lattice
Christopher N. Varney, Kai Sun, Victor Galitski, and Marcos Rigol
TL;DR
This paper uses exact diagonalization to explore the phase diagram of hard-core bosons on a frustrated honeycomb lattice, examining the stability of the Bose-metal phase under different Hamiltonian modifications.
Contribution
It provides new insights into the stability of the Bose-metal phase in the Bose-Hubbard-Haldane model on a honeycomb lattice through detailed numerical analysis.
Findings
Identified conditions under which the Bose-metal phase remains stable.
Mapped the ground-state phase diagram of the model.
Assessed the impact of Hamiltonian variations on phase stability.
Abstract
Using exact diagonalization calculations, we investigate the ground-state phase diagram of the hard-core Bose-Hubbard-Haldane model on the honeycomb lattice. This allows us to probe the stability of the Bose-metal phase proposed in Varney et al (2011 Phys. Rev. Lett. 107 077201), against various changes in the originally studied Hamiltonian.
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