Nonlinearity from quantum mechanics: Dynamically unstable Bose-Einstein condensate in a double-well trap

Details Nonlinearity from quantum mechanics: Dynamically unstable Bose-Einstein condensate in a double-well trap Nonlinearity from quantum mechanics: Dynamically unstable Bose-Einstein condensate in a double-well trap

2010-05-06

arxiv.org/abs/1005.1061v1

Phys. Rev. A 81, 051602(R) (2010)

Physics

Quantum Physics

very close to published version

Scientific paper

10.1103/PhysRevA.81.051602

We study theoretically an atomic Bose-Einstein condensate in a double-well trap both quantum mechanically and classically under conditions such that in the classical model an unstable equilibrium dissolves into large-scale oscillations of the atoms between the potential wells. Quantum mechanics alone does not exhibit such nonlinear dynamics, but measurements of the atom numbers in the potential wells may nevertheless cause the condensate to behave essentially classically.

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