| Issue |
EPL
Volume 127, Number 5, September 2019
|
|
|---|---|---|
| Article Number | 56001 | |
| Number of page(s) | 7 | |
| Section | Condensed Matter: Structural, Mechanical and Thermal Properties | |
| DOI | https://doi.org/10.1209/0295-5075/127/56001 | |
| Published online | 02 October 2019 | |
Dynamic structure function of two interacting atoms in 1D
1 Departament de Física Quàntica i Astrofísica, Facultat de Física, Universitat de Barcelona E-08028 Barcelona, Spain
2 Zentrum für Optische Quantentechnologien, Universität Hamburg - Luruper Chaussee 149, D-22761 Hamburg, Germany
3 Institut de Ciències del Cosmos, Universitat de Barcelona, IEEC- UB - Martí i Franquès 1, E-08028 Barcelona, Spain
Received: 2 August 2019
Accepted: 6 September 2019
We consider two atoms trapped in a one-dimensional harmonic-oscillator potential interacting through a contact interaction. We study the response of the system against a monopolar perturbation during the transition from the non-interacting to the strongly interacting Tonks-Girardeau regime, as the interaction is varied from zero to infinitely large repulsive values. The response of the system is then characterized by the moments of the dynamic structure function which are explicitly calculated from the dynamic structure function and by means of sum rules.
PACS: 67.85.-d – Ultracold gases, trapped gases
© EPLA, 2019
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