The variance and uncertainty product of the position and momentum many-particle operators of structureless bosons interacting by a long-range inter-particle interaction and trapped in a single-well potential are investigated. In the first example, of an out-of-equilibrium interaction-quench scenario, it is found that, despite the system being fully condensed, already when a fraction of a particle is depleted differences with respect to the mean-field quantities emerge. In the second example, of the pathway from condensation to fragmentation of the ground state, we find out that, although the cloud's density broadens while the system's fragments, the position variance actually decreases, the momentum variance increases, and the uncertainty product is not a monotonous function but has a maximum. Implication are briefly discussed.
|Number of pages||9|
|Journal||Journal of Physics: Conference Series|
|State||Published - 20 Apr 2017|
|Event||25th Annual International Laser Physics Workshop, LPHYS 2016 - Yerevan, Armenia|
Duration: 11 Jul 2016 → 15 Jul 2016
Bibliographical notePublisher Copyright:
© Published under licence by IOP Publishing Ltd.
ASJC Scopus subject areas
- Physics and Astronomy (all)