Generic regimes of quantum many-body dynamics of trapped bosonic systems with strong repulsive interactions
| Autor: | Streltsova, Oksana I., Alon, Ofir E., Cederbaum, Lorenz S., Streltsov, Alexej I. |
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| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | Phys. Rev. A 89, 061602(R) (2014) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevA.89.061602 |
| Popis: | Two generically different but universal dynamical quantum many-body behaviors are discovered by probing the stability of trapped fragmented bosonic systems with strong repulsive finite/long range inter-particle interactions. We use different time-dependent processes to destabilize the systems -- a sudden displacement of the trap is accompanied by a sudden quench of the strength of the inter-particle repulsion. A rather moderate non-violent evolution of the density in the first "topology-preserved" scenario is contrasted with a highly-non-equilibrium dynamics characterizing an explosive changes of the density profiles in the second scenario. The many-body physics behind is identified and interpreted in terms of self-induced time-dependent barriers governing the respective under- and over-a-barrier dynamical evolutions. The universality of the discovered scenarios is explicitly confirmed in 1D, 2D and 3D many-body computations in (a)symmetric traps and repulsive finite/long range inter-particle interaction potentials of different shapes. Implications are briefly discussed. Comment: (see Ancillary files with 2D and 3D movies in MPG format) |
| Databáze: | arXiv |
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