Stability and Decay Rates of Non-Isotropic Attractive Bose-Einstein Condensates

Details Stability and Decay Rates of Non-Isotropic Attractive Bose-Einstein Condensates Stability and Decay Rates of Non-Isotropic Attractive Bose-Einstein Condensates

2002-12-03

arxiv.org/abs/cond-mat/0212069v2

Phys. Rev. A 68, 023609 (2003)

Physics

Condensed Matter

Soft Condensed Matter

revtex4, 11 figures, 2 tables. Submitted to Phys. Rev. A

Scientific paper

10.1103/PhysRevA.68.023609

Non-Isotropic Attractive Bose-Einstein condensates are investigated with Newton and inverse Arnoldi methods. The stationary solutions of the Gross-Pitaevskii equation and their linear stability are computed. Bifurcation diagrams are calculated and used to find the condensate decay rates corresponding to macroscopic quantum tunneling, two-three body inelastic collisions and thermally induced collapse. Isotropic and non-isotropic condensates are compared. The effect of anisotropy on the bifurcation diagram and the decay rates is discussed. Spontaneous isotropization of the condensates is found to occur. The influence of isotropization on the decay rates is characterized near the critical point.

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