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
Artikel, Zweitveröffentlichung, Verlagsversion
Kurzbeschreibung (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.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2022 |
| Autor(en): | Schmickler, Christiane H. ; Hammer, Hans-Werner ; Volosniev, Artem G. |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | Universal physics of bound states of a few charged particles |
| Sprache: | Englisch |
| Publikationsjahr: | 2022 |
| Publikationsdatum der Erstveröffentlichung: | 2019 |
| Verlag: | Elsevier |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Physics Letters B |
| Jahrgang/Volume einer Zeitschrift: | 798 |
| Kollation: | 7 Seiten |
| DOI: | 10.26083/tuprints-00012762 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/12762 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichung |
| Kurzbeschreibung (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. |
| Status: | Verlagsversion |
| URN: | urn:nbn:de:tuda-tuprints-127621 |
| Zusätzliche Informationen: | Keywords: Universality; Bound states; Coulomb interaction |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 530 Physik |
| Fachbereich(e)/-gebiet(e): | 05 Fachbereich Physik 05 Fachbereich Physik > Institut für Kernphysik 05 Fachbereich Physik > Institut für Kernphysik > Theoretische Kernphysik |
| Hinterlegungsdatum: | 11 Mär 2022 13:20 |
| Letzte Änderung: | 14 Mär 2022 08:29 |
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| Zugehörige Links: | |
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