Thursday, June 13, 2013

1306.2711 (Uwe R. Fischer et al.)

Robustness of fragmented condensate many-body states for continuous
distribution amplitudes in Fock space

Uwe R. Fischer, Bo Xiong
We consider a two-mode model describing scalar bosons with two-body interactions in a single trap, taking into account coherent pair-exchange between the modes. It is demonstrated that the resulting fragmented many-body states with continuous (nonsingular) Fock-space distribution amplitudes are robust against perturbations due to occupation number and relative phase fluctuations, Josephson-type tunneling between the modes, as well as against perturbations due to interaction with a third mode.
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