Brauneis, Fabian ; Backert, Timothy G. ; Mistakidis, Simeon I. ; Lemeshko, Mikhail ; Hammer, Hans-Werner ; Volosniev, Artem G. (2022)
Artificial atoms from cold bosons in one dimension.
In: New Journal of Physics, 24 (6)
doi: 10.1088/1367-2630/ac78d8
Artikel, Bibliographie
Dies ist die neueste Version dieses Eintrags.
Kurzbeschreibung (Abstract)
We investigate the ground-state properties of weakly repulsive one-dimensional bosons in the presence of an attractive zero-range impurity potential. First, we derive mean-field solutions to the problem on a finite ring for the two asymptotic cases: (i) all bosons are bound to the impurity and (ii) all bosons are in a scattering state. Moreover, we derive the critical line that separates these regimes in the parameter space. In the thermodynamic limit, this critical line determines the maximum number of bosons that can be bound by the impurity potential, forming an artificial atom. Second, we validate the mean-field results using the flow equation approach and the multi-layer multi-configuration time-dependent Hartree method for atomic mixtures. While beyond-mean-field effects destroy long-range order in the Bose gas, the critical boson number is unaffected. Our findings are important for understanding such artificial atoms in low-density Bose gases with static and mobile impurities.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2022 |
| Autor(en): | Brauneis, Fabian ; Backert, Timothy G. ; Mistakidis, Simeon I. ; Lemeshko, Mikhail ; Hammer, Hans-Werner ; Volosniev, Artem G. |
| Art des Eintrags: | Bibliographie |
| Titel: | Artificial atoms from cold bosons in one dimension |
| Sprache: | Englisch |
| Publikationsjahr: | 2022 |
| Ort: | Darmstadt |
| Verlag: | IOP Publishing |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | New Journal of Physics |
| Jahrgang/Volume einer Zeitschrift: | 24 |
| (Heft-)Nummer: | 6 |
| Kollation: | 21 Seiten |
| DOI: | 10.1088/1367-2630/ac78d8 |
| Zugehörige Links: | |
| Kurzbeschreibung (Abstract): | We investigate the ground-state properties of weakly repulsive one-dimensional bosons in the presence of an attractive zero-range impurity potential. First, we derive mean-field solutions to the problem on a finite ring for the two asymptotic cases: (i) all bosons are bound to the impurity and (ii) all bosons are in a scattering state. Moreover, we derive the critical line that separates these regimes in the parameter space. In the thermodynamic limit, this critical line determines the maximum number of bosons that can be bound by the impurity potential, forming an artificial atom. Second, we validate the mean-field results using the flow equation approach and the multi-layer multi-configuration time-dependent Hartree method for atomic mixtures. While beyond-mean-field effects destroy long-range order in the Bose gas, the critical boson number is unaffected. Our findings are important for understanding such artificial atoms in low-density Bose gases with static and mobile impurities. |
| Freie Schlagworte: | systems with impurities, ultra cold gases, artificial atom, IM-SRG, ML-MCDTHX, mean field, flow equations |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 530 Physik |
| Fachbereich(e)/-gebiet(e): | 05 Fachbereich Physik 05 Fachbereich Physik > Institut für Kernphysik |
| Hinterlegungsdatum: | 02 Aug 2024 12:42 |
| Letzte Änderung: | 02 Aug 2024 12:42 |
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| Suche nach Titel in: | TUfind oder in Google |
Verfügbare Versionen dieses Eintrags
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Artificial atoms from cold bosons in one dimension. (deposited 01 Jul 2022 11:33)
- Artificial atoms from cold bosons in one dimension. (deposited 02 Aug 2024 12:42) [Gegenwärtig angezeigt]
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