Interferencing in coupled Bose-Einstein condensates

Details Interferencing in coupled Bose-Einstein condensates Interferencing in coupled Bose-Einstein condensates

2000-04-04

arxiv.org/abs/math-ph/0004004v1

J.Stat.Phys 102 (5/6) (2001), 1383.

Physics

Mathematical Physics

Scientific paper

We consider an exactly soluble model of two Bose-Einstein condensates with a Josephson-type of coupling. Its equilibrium states are explicitly found showing condensation and spontaneously broken gauge symmetry. It is proved that the total number and total phase fluctuation operators, as well as the relative number and relative current fluctuation operators form both a quantum canonical pair. The exact relation between the relative current and phase fluctuation operators is established. Also the dynamics of these operators is solved showing the collapse and revival phenomenon.

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