Superfluids and Supersolids on Frustrated 2D Lattices
Condensed Matter
2009-10-28 v1
Abstract
We study the ground state of hard-core bosons with nearest-neighbor hopping and nearest-neighbor interactions on the triangular and Kagom\'e lattices by mapping to a system of spins (), which we analyze using spin-wave theory. We find that the both lattices display superfluid and supersolid (a coexistence of superfluid and solid) order as the parameters and filling are varied. Quantum fluctuations seem large enough in the Kagom\'e system to raise the interesting possibility of a disordered ground state.
Keywords
Cite
@article{arxiv.cond-mat/9607217,
title = {Superfluids and Supersolids on Frustrated 2D Lattices},
author = {Ganpathy Murthy and Daniel Arovas and Assa Auerbach},
journal= {arXiv preprint arXiv:cond-mat/9607217},
year = {2009}
}
Comments
Latex format, 24 figures available by email upon request. Submitted to Physical Review B