Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Universal Dimer in a Collisionally Opaque Medium: Experimental
  Observables and Efimov Resonances   A universal dimer is subject to secondary collisions with atoms when formed
in a cloud of ultracold atoms via three-body recombination. We show that in a
collisionally opaque medium, the value of the scattering length that results in
the maximum number of secondary collisions may not correspond to the Efimov
resonance at the atom-dimer threshold and thus can not be automatically
associated with it. This result explains a number of controversies in recent
experimental results on universal three-body states and supports the emerging
evidence for the significant finite range corrections to the first excited
Efimov energy level.

0
The categories of this paper are: hep-ph
7
The categories of this paper are: hep-th
35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg
6
The categories of this paper are: astro-ph
2
The categories of this paper are: math
28
The categories of this paper are: alg-geom
27
The categories of this paper are: comp-gas
22
The categories of this paper are: chao-dyn
37
The categories of this paper are: supr-con
26
The categories of this paper are: bayes-an
36
The categories of this paper are: cmp-lg
11
The categories of this paper are: hep-lat
16
The categories of this paper are: stat
17
The categories of this paper are: q-fin
1
The categories of this paper are: cs