Determination of the scattering length of erbium atoms
An accurate knowledge of the scattering length is fundamental in ultracold quantum gas experiments and essential for the characterization of the system as well as for a meaningful comparison to theoretical models. Here, we perform a careful characterization of the s-wave scattering length as for the...
Gespeichert in:
| Hauptverfasser: | , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
8 June 2022
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| In: |
Physical review
Year: 2022, Jahrgang: 105, Heft: 6, Pages: 1-12 |
| ISSN: | 2469-9934 |
| DOI: | 10.1103/PhysRevA.105.063307 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevA.105.063307 Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevA.105.063307 
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| Verfasserangaben: | A. Patscheider, L. Chomaz, G. Natale, D. Petter, M.J. Mark, S. Baier, B. Yang, R.R.W. Wang, J.L. Bohn, and F. Ferlaino |
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| 245 | 1 | 0 | |a Determination of the scattering length of erbium atoms |c A. Patscheider, L. Chomaz, G. Natale, D. Petter, M.J. Mark, S. Baier, B. Yang, R.R.W. Wang, J.L. Bohn, and F. Ferlaino |
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| 520 | |a An accurate knowledge of the scattering length is fundamental in ultracold quantum gas experiments and essential for the characterization of the system as well as for a meaningful comparison to theoretical models. Here, we perform a careful characterization of the s-wave scattering length as for the four highest-abundance isotopes of erbium, in the magnetic field range from 0 to 5 G. We report on cross-dimensional thermalization measurements and apply the Enskog equations of change to numerically simulate the thermalization process and to analytically extract an expression for the so-called number of collisions per rethermalization (NCPR) to obtain as from our experimental data. We benchmark the applied cross-dimensional thermalization technique with the experimentally more demanding lattice modulation spectroscopy and find good agreement for our parameter regime. Our experiments are compatible with a dependence of the NCPR with as, as theoretically expected in the case of strongly dipolar gases. Surprisingly, we experimentally observe a dependency of the NCPR on the density, which might arise due to deviations from an ideal harmonic trapping configuration. Finally, we apply a model for the dependency of the background scattering length with the isotope mass, allowing us to estimate the number of bound states of erbium. | ||
| 700 | 1 | |a Chomaz, Lauriane |e VerfasserIn |0 (DE-588)123770474X |0 (DE-627)1764642279 |4 aut | |
| 700 | 1 | |a Natale, G. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Petter, D. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Mark, M. J. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Baier, S. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Yang, B. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Wang, R. R. W. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Bohn, J. L. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Ferlaino, F. |e VerfasserIn |4 aut | |
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