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Shallow Trimers of Two Identical Fermions and One Particle in Resonant Regimes
by Pascal Naidon, Ludovic Pricoupenko, Christiane Schmickler
Submission summary
| Authors (as registered SciPost users): | Pascal Naidon |
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| Preprint Link: | https://arxiv.org/abs/2112.02983v2 (pdf) |
| Date accepted: | May 9, 2022 |
| Date submitted: | March 28, 2022, 2:46 a.m. |
| Submitted by: | Pascal Naidon |
| Submitted to: | SciPost Physics |
| Ontological classification | |
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| Academic field: | Physics |
| Specialties: |
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| Approach: | Theoretical |
Abstract
We consider two identical fermions interacting in the p-wave channel. Each fermion also interacts with another particle in the vicinity of an s-wave resonance. We find that in addition to the Kartavtsev-Malykh universal trimer states resulting from the s-wave particle-fermion interaction, the fermion-fermion p-wave interaction induces one or two shallow trimers in a large domain of the control parameters, including a borromean regime where the ground-state trimer exists in the absence of dimers at any mass ratio between the fermions and the particle. A generic picture of the trimer spectrum emerges from this work in terms of the low-energy parameters of the interactions.
Published as SciPost Phys. 12, 185 (2022)
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