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Condensed Matter > Quantum Gases

arXiv:2302.01022 (cond-mat)
[Submitted on 2 Feb 2023 (v1), last revised 23 Jun 2023 (this version, v2)]

Title:Finite-range bias in fitting three-body loss to the zero-range model

Authors:Sofia Agafonova, Mikhail Lemeshko, Artem G. Volosniev
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Abstract:We study the impact of finite-range physics on the zero-range-model analysis of three-body recombination in ultracold atoms. We find that temperature dependence of the zero-range parameters can vary from one set of measurements to another as it may be driven by the distribution of error bars in the experiment, and not by the underlying three-body physics. To study finite-temperature effects in three-body recombination beyond the zero-range physics, we introduce and examine a finite-range model based upon a hyperspherical formalism. The systematic error discussed in the paper may provide a significant contribution to the error bars of measured three-body parameters.
Subjects: Quantum Gases (cond-mat.quant-gas)
Cite as: arXiv:2302.01022 [cond-mat.quant-gas]
  (or arXiv:2302.01022v2 [cond-mat.quant-gas] for this version)
  https://doi.org/10.48550/arXiv.2302.01022
Journal reference: Phys. Rev. A (Letter) 107, L061304 (2023)
Related DOI: https://doi.org/10.1103/PhysRevA.107.L061304

Submission history

From: Sofia Agafonova [view email]
[v1] Thu, 2 Feb 2023 11:15:59 UTC (3,139 KB)
[v2] Fri, 23 Jun 2023 08:39:44 UTC (216 KB)
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