Geometry induced pair condensation
Quantum Gases
2014-01-08 v1 Strongly Correlated Electrons
Abstract
We study a one-dimensional model of interacting bosons on a lattice with two flat bands. Regular condensation is suppressed due to the absence of a well defined minimum in the single particle spectrum. We find that interactions stabilize a number of non-trivial phases like a pair (quasi-) condensate, a supersolid at incommensurable fillings and valence bond crystals at commensurability. We support our analytical calculations with numerical simulations using the density matrix renormalization group technique. Implications for cold-atoms and extensions to higher dimensions are discussed.
Cite
@article{arxiv.1310.2589,
title = {Geometry induced pair condensation},
author = {Murad Tovmasyan and Evert van Nieuwenburg and Sebastian Huber},
journal= {arXiv preprint arXiv:1310.2589},
year = {2014}
}
Comments
4+ pages