| Issue |
Europhys. Lett.
Volume 62, Number 3, May 2003
|
|
|---|---|---|
| Page(s) | 336 - 342 | |
| Section | Nuclear physics | |
| DOI | https://doi.org/10.1209/epl/i2003-00401-5 | |
| Published online | 01 April 2003 | |
Efimov states in asymmetric systems
Department of Physics and Astronomy, University of
Aarhus DK-8000 Aarhus C, Denmark
Received:
20
January
2003
Accepted:
5
March
2003
The conditions for occurrence of the Efimov effect is briefly
described using hyperspherical coordinates. The strength of the
effective hyperradial 
potential appearing for two or
three large scattering lengths is computed and discussed as a
function of two independent mass ratios of the three constituent
particles. The effect is by far most pronounced for asymmetric
systems with three very different masses. One Efimov state may by
chance appear in nuclei. Many states could be present for systems
with one electron and two neutral atoms or molecules. Estimates
of the number of states and their sizes and energies are given.
PACS: 21.45.+v – Few-body systems / 31.15.Ja – Hyperspherical methods
© EDP Sciences, 2003
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