title: Spatial chaos of trapped Bose-Einstein condensate in one-dimensional weak optical lattice potential.
abstract: The spatially chaotic attractor in an elongated cloud of Bose-Einstein condensed atoms perturbed by a weak optical lattice potential is studied. The analytical insolvability and numerical incomputability of the atomic number density are revealed by a perturbed solution that illustrates the unpredictability of the deterministic chaos. Although this could lead the nonphysical explosion and unboundedness to the numerical solution, the theoretical analysis offers a criterion to avoid them. Moreover, the velocity field is investigated that exhibits the superfluid property of the chaotic system.
authors.affiliation: Department of Physics, Hunan Normal University, Changsha 410081, China.
authors.forename: Guishu
authors.initials: G
authors.lastname: Chong
authors.forename: Wenhua
authors.initials: W
authors.lastname: Hai
authors.forename: Qiongtao
authors.initials: Q
authors.lastname: Xie