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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. (Publisher's Version)
In: Physics Letters B, 798, Elsevier, ISSN 0370-2693, e-ISSN 1873-2445,
DOI: 10.26083/tuprints-00012762,
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Item Type: Article
Origin: Secondary publication
Status: Publisher's Version
Title: Universal physics of bound states of a few charged particles
Language: English
Abstract:

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.

Journal or Publication Title: Physics Letters B
Journal volume: 798
Publisher: Elsevier
Collation: 7 Seiten
Classification DDC: 500 Naturwissenschaften und Mathematik > 530 Physik
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: 11 Mar 2022 13:20
DOI: 10.26083/tuprints-00012762
Corresponding Links:
URN: urn:nbn:de:tuda-tuprints-127621
Additional Information:

Keywords: Universality; Bound states; Coulomb interaction

URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/12762
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