Nonergodic behavior of interacting bosons in harmonic traps

Authors
Papenbrock, T Bertsch, GF
Citation
T. Papenbrock et Gf. Bertsch, Nonergodic behavior of interacting bosons in harmonic traps, PHYS REV A, 58(6), 1998, pp. 4854-4861
Citations number
28
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW A
ISSN journal
10502947 → ACNP
Volume
58
Issue
6
Year of publication
1998
Pages
4854 - 4861
Database
ISI
SICI code
1050-2947(199812)58:6<4854:NBOIBI>2.0.ZU;2-O
Abstract
We study the time evolution of a system of interacting bosons in a harmonic trap. In the low-energy regime, the quantum system is not ergodic and disp lays rather large fluctuations of the ground-state occupation number. In th e high-energy regime of classical physics we find nonergodic behavior for m odest numbers of trapped particles. We give two conditions that assure the ergodic behavior of the quantum system even below the condensation temperat ure. [S1050-2947(98)08512-0].