Spectral structure and many-body dynamics of ultracold bosons in a double-well
Abstract: We examine the spectral structure and many-body dynamics of two and three repulsively interacting bosons trapped in a one-dimensional double-well, for variable barrier height, inter-particle interaction strength, and initial conditions. By exact diagonalization of the many-particle Hamiltonian, we specifically explore the dynamical behavior of the particles launched either at the single-particle ground state or saddle-point energy, in a time-independent potential. We complement these results by a characterization of the cross-over from diabatic to quasi-adiabatic evolution under finite-time switching of the potential barrier, via the associated time evolution of a single particle’s von Neumann entropy. This is achieved with the help of the multiconfigurational time-dependent Hartree method for indistinguishable particles (MCTDH-X)—which also allows us to extrapolate our results for increasing particle numbers
- Location
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Deutsche Nationalbibliothek Frankfurt am Main
- Extent
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Online-Ressource
- Language
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Englisch
- Notes
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Entropy. - 22, 4 (2020) , 382, ISSN: 1099-4300
- Keyword
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Bose-Einstein-Kondensation
- Event
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Veröffentlichung
- (where)
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Freiburg
- (who)
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Universität
- (when)
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2020
- Creator
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Schäfer, Frank
Bastarrachea-Magnani, Miguel A.
Lode, Axel U. J.
Forges de Parny, Laurent de
Buchleitner, Andreas
- DOI
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10.3390/e22040382
- URN
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urn:nbn:de:bsz:25-freidok-1554117
- Rights
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Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Last update
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25.03.2025, 1:45 PM CET
Data provider
Deutsche Nationalbibliothek. If you have any questions about the object, please contact the data provider.
Associated
- Schäfer, Frank
- Bastarrachea-Magnani, Miguel A.
- Lode, Axel U. J.
- Forges de Parny, Laurent de
- Buchleitner, Andreas
- Universität
Time of origin
- 2020