Anomalous loss behavior in a single-component Fermi gas close to a $p$-Wave Feshbach resonance

• URL: http://arxiv.org/abs/2210.15981v2
• Date: Fri, 26 May 2023 12:44:05 GMT
• Title: Anomalous loss behavior in a single-component Fermi gas close to a $p$-Wave Feshbach resonance
• Authors: K. Welz, M. Gerken, B. Zhu, E. Lippi, M. Rautenberg, L. Chomaz, M. Weidem\"uller
• Abstract summary: We investigate three-body losses in a single-component Fermi gas near a $p$-wave Feshbach resonance. We find that the loss behavior exhibits a $n3$ and an anomalous $n2$ density dependence for elastic-to-inelastic collision rate larger than smaller than 1. These findings are particularly relevant for understanding atom loss and energetic evolution of ultracold gases of fermionic lithium atoms in their ground state.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We theoretically investigate three-body losses in a single-component Fermi gas near a $p$-wave Feshbach resonance in the interacting, non-unitary regime. We extend the cascade model introduced by Waseem \textit{et al.} [M. Waseem, J. Yoshida, T. Saito, and T. Mukaiyama, Phys. Rev. A \textbf{99}, 052704 (2019)] to describe the elastic and inelastic collision processes. We find that the loss behavior exhibits a $n^3$ and an anomalous $n^2$ density dependence for a ratio of elastic-to-inelastic collision rate larger and smaller than 1, respectively. The corresponding evolutions of the energy distribution show collisional cooling or evolution toward low-energetic non-thermalized steady states, respectively. These findings are particularly relevant for understanding atom loss and energetic evolution of ultracold gases of fermionic lithium atoms in their ground state.

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