Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Having it Both Ways: Distinguishable Yet Phase-Coherent Mixtures of
  Bose-Einstein Condensates   We have begun a series of experiments on mixed bosonic quantum fluids. Our
system is mixed Bose-Einstein condensates in dilute Rb-87. By simultaneously
trapping the atoms in two different hyperfine states, we are able to study the
dynamics of component separation and of the relative quantum phase of two
interpenetrating condensates. Population can be converted from one state to the
other at a rate that is sensitive to the relative phase.

15
The categories of this paper are: nucl-ex
22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
27
The categories of this paper are: comp-gas
20
The categories of this paper are: acc-phys
35
The categories of this paper are: mtrl-th
28
The categories of this paper are: alg-geom
19
The categories of this paper are: eess
12
The categories of this paper are: nucl-th
26
The categories of this paper are: bayes-an
32
The categories of this paper are: atom-ph
34
The categories of this paper are: chem-ph
29
The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol
6
The categories of this paper are: astro-ph
1
The categories of this paper are: cs