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
- Standort
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Deutsche Nationalbibliothek Frankfurt am Main
- Umfang
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Online-Ressource
- Sprache
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Englisch
- Anmerkungen
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Entropy. - 22, 4 (2020) , 382, ISSN: 1099-4300
- Schlagwort
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Bose-Einstein-Kondensation
- Ereignis
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Veröffentlichung
- (wo)
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Freiburg
- (wer)
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Universität
- (wann)
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2020
- Urheber
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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
- Rechteinformation
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Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
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14.08.2025, 11:00 MESZ
Datenpartner
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Beteiligte
- Schäfer, Frank
- Bastarrachea-Magnani, Miguel A.
- Lode, Axel U. J.
- Forges de Parny, Laurent de
- Buchleitner, Andreas
- Universität
Entstanden
- 2020