Physics – Condensed Matter – Statistical Mechanics
Scientific paper
1999-05-05
Physics
Condensed Matter
Statistical Mechanics
Submitted
Scientific paper
10.1103/PhysRevA.61.063601
We study the quantum corrections to the Gross-Pitaevskii equation for two weakly linked Bose-Einstein condensates. The goals are: 1) to investigate dynamical regimes at the borderline between the classical and quantum behaviour of the bosonic field; 2) to search for new macroscopic quantum coherence phenomena not observable with other superfluid/superconducting systems. Quantum fluctuations renormalize the classical Josephson oscillation frequencies. Large amplitude phase oscillations are modulated, exhibiting collapses and revivals. We describe a new inter-well oscillation mode, with a vanishing (ensemble averaged) mean value of the observables, but with oscillating mean square fluctuations. Increasing the number of condensate atoms, we recover the classical Gross-Pitaevskii (Josephson) dynamics, without invoking the symmetry-breaking of the Gauge invariance.
Raghavan Srikanth
Smerzi Augusto
No associations
LandOfFree
Macroscopic Quantum Fluctuations in the Josephson Dynamics of Two Weakly Linked Bose-Einstein Condensates does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Macroscopic Quantum Fluctuations in the Josephson Dynamics of Two Weakly Linked Bose-Einstein Condensates, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Macroscopic Quantum Fluctuations in the Josephson Dynamics of Two Weakly Linked Bose-Einstein Condensates will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-148332