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Clusters in Separated Tubes of Tilted Dipoles

Armstrong, Jeremy R. ; Jensen, Aksel S. ; Volosniev, Artem G. ; Zinner, Nikolaj T. (2022)
Clusters in Separated Tubes of Tilted Dipoles.
In: Mathematics, 2022, 8 (4)
doi: 10.26083/tuprints-00016150
Article, Secondary publication, Publisher's Version

Copyright Information: CC BY 4.0 International - Creative Commons, Attribution.

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Item Type: Article
Type of entry: Secondary publication
Title: Clusters in Separated Tubes of Tilted Dipoles
Language: English
Date: 2022
Place of Publication: Darmstadt
Year of primary publication: 2022
Publisher: MDPI
Journal or Publication Title: Mathematics
Volume of the journal: 8
Issue Number: 4
Collation: 16 Seiten
DOI: 10.26083/tuprints-00016150
Corresponding Links:
Origin: Secondary publication DeepGreen

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.

Uncontrolled Keywords: cold dipolar molecules, Few-body to many-body crossover, harmonic approximation
Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-161500
Classification DDC: 500 Science and mathematics > 510 Mathematics
500 Science and mathematics > 530 Physics
Divisions: 05 Department of Physics > Institute of Nuclear Physics
Date Deposited: 09 Feb 2022 15:21
Last Modified: 07 Mar 2023 08:08
SWORD Depositor: Deep Green
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/16150
PPN: 50556887X
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