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Universal physics of bound states of a few charged particles

Schmickler, Christiane H. ; Hammer, Hans-Werner ; Volosniev, Artem G. (2022)
Universal physics of bound states of a few charged particles.
In: Physics Letters B, 2019, 798
doi: 10.26083/tuprints-00012762
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: Universal physics of bound states of a few charged particles
Language: English
Date: 2022
Place of Publication: Darmstadt
Year of primary publication: 2019
Publisher: Elsevier
Journal or Publication Title: Physics Letters B
Volume of the journal: 798
Collation: 7 Seiten
DOI: 10.26083/tuprints-00012762
Corresponding Links:
Origin: Secondary publication

We study few-body bound states of charged particles subject to attractive zero-range/short-range plus repulsive Coulomb interparticle forces. The characteristic length scales of the system at zero energy are set by the Coulomb length scale D and the Coulomb-modified effective range reff. We study shallow bound states of charged particles with D >> reff and show that these systems obey universal scaling laws different from neutral particles. An accurate description of these states requires both the Coulombmodified scattering length and the effective range unless the Coulomb interaction is very weak (D → ∞). Our findings are relevant for bound states whose spatial extent is significantly larger than the range of the attractive potential. These states enjoy universality – their character is independent of the shape of the short-range potential.

Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-127621
Additional Information:

Keywords: Universality; Bound states; Coulomb interaction

Classification DDC: 500 Science and mathematics > 530 Physics
Divisions: 05 Department of Physics > Institute of Nuclear Physics
05 Department of Physics > Institute of Nuclear Physics > Theoretische Kernphysik
Date Deposited: 11 Mar 2022 13:20
Last Modified: 23 Feb 2023 06:48
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/12762
PPN: 50521847X
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