Absence of the Twisted Superfluid State in a mean field model of bosons on a Honeycomb Lattice

Abstract

Motivated by recent observations (P. Soltan-Panahi {\it et al.}, Nature Physics {\bf 8}, 71-75 (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.

References in corpus (5)

• Many-Body Physics with Ultracold Gases
• Orbital superfluidity in the $P$-band of a bipartite optical square lattice
• Multi-Component Quantum Gases in Spin-Dependent Hexagonal Lattices
• Loop Structure Stability of a Double-Well-Lattice BEC
• Role of interactions in time-of-flight expansion of atomic clouds from optical lattices

Cited by in corpus (6)

• Twisted complex superfluids in optical lattices
• Twisted superfluid phase in the extended one-dimensional Bose-Hubbard model
• Beyond mean-field study of a binary bosonic mixture in a state-dependent honeycomb lattice
• Symmetry-broken momentum distributions induced by matter-wave diffraction during time-of-flight expansion of ultracold atoms
• Signatures of spatial inversion asymmetry of an optical lattice observed in matter-wave diffraction
• Twisted superfluid and supersolid phases of triplons in bilayer honeycomb magnets