Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Universal three-body physics in ultracold KRb mixtures   Ultracold atomic gases have recently become a driving force in few-body
physics due to the observation of the Efimov effect. While initially observed
in equal mass systems, one expects even richer few-body physics in the
heteronuclear case. In previous experiments with ultracold mixtures of
potassium and rubidium, an unexpected non-universal behavior of Efimov
resonances was observed. In contrast, we measure the scattering length
dependent three-body recombination coefficient in ultracold heteronuclear
mixtures of $^{39}\mathrm{K}$-\87Rb and $^{41}\mathrm{K}$-\87Rb and do not
observe any signatures of Efimov resonances for accessible scattering lengths
in either mixture. Our results show good agreement with our theoretical model
for the scattering dependent three-body recombination coefficient and
reestablish universality across isotopic mixtures.

20
The categories of this paper are: acc-phys
6
The categories of this paper are: astro-ph
13
The categories of this paper are: quant-ph
0
The categories of this paper are: hep-ph
9
The categories of this paper are: nlin
5
The categories of this paper are: gr-qc
34
The categories of this paper are: chem-ph
33
The categories of this paper are: plasm-ph
29
The categories of this paper are: funct-an
37
The categories of this paper are: supr-con
21
The categories of this paper are: adap-org
7
The categories of this paper are: hep-th
16
The categories of this paper are: stat
24
The categories of this paper are: dg-ga
11
The categories of this paper are: hep-lat
27
The categories of this paper are: comp-gas