Efimov energy level rebounding off the atom-dimer continuum
- URL: http://arxiv.org/abs/2004.02723v1
- Date: Mon, 6 Apr 2020 15:01:45 GMT
- Title: Efimov energy level rebounding off the atom-dimer continuum
- Authors: Yaakov Yudkin, Roy Elbaz, Lev Khaykovich
- Abstract summary: We show that the trimer energy level rebounds from the atom-dimer continuum and becomes a deeper bound state again.
This provides a new challenge and guide for few-body theories to incorporate realistic interatomic potentials.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: The Efimov effect, with its ladder of weakly bound three-atomic molecules,
poses intriguing questions in the theoretically controversial and
experimentally demanding regime of merging of the first excited Efimov energy
level with the atom-dimer continuum. Using an original experimental technique,
where a coherent superposition state of diatomic and triatomic molecules is
utilized, we investigate this regime and reveal a striking behavior: Instead of
merging with the atom-dimer continuum the trimer energy level rebounds from it
and becomes a deeper bound state again. In addition, instead of a tangential
approach between the two levels we observe a rather narrow resonance, providing
a new challenge and guide for few-body theories to incorporate realistic
interatomic potentials.
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