Absence of the twisted superfluid state in a mean-field model of bosons on a honeycomb lattice

作者：Choudhury Sayan^*; Mueller Erich J

来源：Physical Review A, 2013, 87(3): 033621.

DOI：10.1103/PhysRevA.87.033621

Motivated by recent observations [Soltan-Panahi et al., Nat. Phys. 8, 71 (2012)], we study the stability of a Bose-Einstein condensate within a spin-dependent honeycomb lattice towards forming a "twisted superfluid" state. Our exhaustive numerical search fails to find this phase, pointing to possible non-mean-field physics. DOI: 10.1103/PhysRevA.87.033621

• 出版日期2013-3-22