Brauneis, Fabian ; Backert, Timothy G. ; Mistakidis, Simeon I. ; Lemeshko, Mikhail ; Hammer, Hans-Werner ; Volosniev, Artem G. (2022):
Artificial atoms from cold bosons in one dimension. (Publisher's Version)
In: New Journal of Physics, 24 (6), IOP Publishing, e-ISSN 1367-2630,
DOI: 10.26083/tuprints-00021606,
[Article]
![]() |
Text
njp_24_6_063036.pdf Copyright Information: CC BY 4.0 International - Creative Commons, Attribution. Download (3MB) |
Item Type: | Article |
---|---|
Origin: | Secondary publication DeepGreen |
Status: | Publisher's Version |
Title: | Artificial atoms from cold bosons in one dimension |
Language: | English |
Abstract: | We investigate the ground-state properties of weakly repulsive one-dimensional bosons in the presence of an attractive zero-range impurity potential. First, we derive mean-field solutions to the problem on a finite ring for the two asymptotic cases: (i) all bosons are bound to the impurity and (ii) all bosons are in a scattering state. Moreover, we derive the critical line that separates these regimes in the parameter space. In the thermodynamic limit, this critical line determines the maximum number of bosons that can be bound by the impurity potential, forming an artificial atom. Second, we validate the mean-field results using the flow equation approach and the multi-layer multi-configuration time-dependent Hartree method for atomic mixtures. While beyond-mean-field effects destroy long-range order in the Bose gas, the critical boson number is unaffected. Our findings are important for understanding such artificial atoms in low-density Bose gases with static and mobile impurities. |
Journal or Publication Title: | New Journal of Physics |
Volume of the journal: | 24 |
Issue Number: | 6 |
Place of Publication: | Darmstadt |
Publisher: | IOP Publishing |
Collation: | 21 Seiten |
Uncontrolled Keywords: | systems with impurities, ultra cold gases, artificial atom, IM-SRG, ML-MCDTHX, mean field, flow equations |
Classification DDC: | 500 Naturwissenschaften und Mathematik > 530 Physik |
Divisions: | 05 Department of Physics > Institute of Nuclear Physics |
Date Deposited: | 01 Jul 2022 11:33 |
Last Modified: | 08 Sep 2022 09:03 |
DOI: | 10.26083/tuprints-00021606 |
Corresponding Links: | |
URN: | urn:nbn:de:tuda-tuprints-216065 |
SWORD Depositor: | Deep Green |
URI: | https://tuprints.ulb.tu-darmstadt.de/id/eprint/21606 |
PPN: | 498980030 |
Export: |
![]() |
View Item |