Optical lattice with heterogeneous atomic density

Abstract

The possibility is considered for the formation in optical lattices of a heterogeneous state characterized by a spontaneous mesoscopic separation of the system into the spatial regions with different atomic densities. It is shown that such states can arise, if there are repulsive interactions between atoms in different lattice sites and the filling factor is less than one-half.

Latex file, 17 pages, 5 figures

References in corpus (5)

• Many-Body Physics with Ultracold Gases
• Repulsively bound atom pairs in an optical lattice
• Cold Bosons in Optical Lattices
• Disorder-induced trapping versus Anderson localization in Bose-Einstein condensates expanding in disordered potentials
• Formation of granular structures in trapped Bose-Einstein condensates under oscillatory excitations