Armstrong, Jeremy R. ; Jensen, Aksel S. ; Volosniev, Artem G. ; Zinner, Nikolaj T. (2022)
Clusters in Separated Tubes of Tilted Dipoles.
In: Mathematics, 8 (4)
doi: 10.3390/math8040484
Artikel, Bibliographie
Dies ist die neueste Version dieses Eintrags.
Kurzbeschreibung (Abstract)
A few-body cluster is a building block of a many-body system in a gas phase provided the temperature at most is of the order of the binding energy of this cluster. Here we illustrate this statement by considering a system of tubes filled with dipolar distinguishable particles. We calculate the partition function, which determines the probability to find a few-body cluster at a given temperature. The input for our calculations — the energies of few-body clusters — is estimated using the harmonic approximation. We first describe and demonstrate the validity of our numerical procedure. Then we discuss the results featuring melting of the zero-temperature many-body state into a gas of free particles and few-body clusters. For temperature higher than its binding energy threshold, the dimers overwhelmingly dominate the ensemble, where the remaining probability is in free particles. At very high temperatures free (harmonic oscillator trap-bound) particle dominance is eventually reached. This structure evolution appears both for one and two particles in each layer providing crucial information about the behavior of ultracold dipolar gases. The investigation addresses the transition region between few- and many-body physics as a function of temperature using a system of ten dipoles in five tubes.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2022 |
| Autor(en): | Armstrong, Jeremy R. ; Jensen, Aksel S. ; Volosniev, Artem G. ; Zinner, Nikolaj T. |
| Art des Eintrags: | Bibliographie |
| Titel: | Clusters in Separated Tubes of Tilted Dipoles |
| Sprache: | Englisch |
| Publikationsjahr: | 2022 |
| Verlag: | MDPI |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Mathematics |
| Jahrgang/Volume einer Zeitschrift: | 8 |
| (Heft-)Nummer: | 4 |
| Kollation: | 16 Seiten |
| DOI: | 10.3390/math8040484 |
| Zugehörige Links: | |
| Kurzbeschreibung (Abstract): | A few-body cluster is a building block of a many-body system in a gas phase provided the temperature at most is of the order of the binding energy of this cluster. Here we illustrate this statement by considering a system of tubes filled with dipolar distinguishable particles. We calculate the partition function, which determines the probability to find a few-body cluster at a given temperature. The input for our calculations — the energies of few-body clusters — is estimated using the harmonic approximation. We first describe and demonstrate the validity of our numerical procedure. Then we discuss the results featuring melting of the zero-temperature many-body state into a gas of free particles and few-body clusters. For temperature higher than its binding energy threshold, the dimers overwhelmingly dominate the ensemble, where the remaining probability is in free particles. At very high temperatures free (harmonic oscillator trap-bound) particle dominance is eventually reached. This structure evolution appears both for one and two particles in each layer providing crucial information about the behavior of ultracold dipolar gases. The investigation addresses the transition region between few- and many-body physics as a function of temperature using a system of ten dipoles in five tubes. |
| Freie Schlagworte: | cold dipolar molecules, Few-body to many-body crossover, harmonic approximation |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 510 Mathematik 500 Naturwissenschaften und Mathematik > 530 Physik |
| Fachbereich(e)/-gebiet(e): | 05 Fachbereich Physik 05 Fachbereich Physik > Institut für Kernphysik |
| Hinterlegungsdatum: | 02 Aug 2024 12:37 |
| Letzte Änderung: | 02 Aug 2024 12:37 |
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Verfügbare Versionen dieses Eintrags
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Clusters in Separated Tubes of Tilted Dipoles. (deposited 09 Feb 2022 15:21)
- Clusters in Separated Tubes of Tilted Dipoles. (deposited 02 Aug 2024 12:37) [Gegenwärtig angezeigt]
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