2013/12/20 by Oksana Streltsova, Oksana I. Streltsova, Ofir E. Alon +2
Mathematics · Physics and Astronomy · #Boson #Classical mechanics #Cold Atom Physics and Bose-Einstein Condensates #Curse of dimensionality #Displacement (psychology) #Generality #Ground state #Mathematics #Non-equilibrium thermodynamics #Physics #Quantum #Quantum dynamics #Quantum many-body systems #Quantum mechanics #Quantum, superfluid, helium dynamics #Range (aeronautics) #Statistical physics #Theoretical physics #cond-mat.quant-gas
paper · pdf · doi:10.1103/physreva.89.061602
published as Phys. Rev. A 89, 061602(R) (2014) · (see Ancillary files with 2D and 3D movies in MPG format)
arxiv created 2013/12/20 · openalex publication_date 2014/06/27 · arxiv updated 2014/10/21 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The nonequilibrium quantum dynamics of trapped bosons interacting by strong interparticle interaction of finite range in one, two, and three spatial dimensions is investigated on an accurate many-body level. We use different time-dependent processes to destabilize the systems' ground states: A sudden quench of the strength of the interparticle repulsion is accompanied by displacement of the trap. Two qualitatively different but otherwise generic dynamical quantum many-body behaviors are discovered. In the first, the overall ``topology'' of the ground-state density is preserved, whereas in the second the density totally ``explodes.'' An intuitive many-body time-dependent model is devised to interpret and explain the observations. The generality of the discovered scenarios is explicitly confirmed in traps of various shapes and dimensionality, and interparticle interactions of different forms and ranges. Implications are briefly discussed.