Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Bose-Einstein vs. electrodynamic condensates: the question of order and
  coherence   The remarkable recent experiments on ensembles of magnetically trapped
ultracold alkali atoms have demonstrated the transition to a highly ordered
phase, that has been attributed to the process of quantum-mechanical
condensation, predicted long ago (1924) by Bose and Einstein. After having
presented our argument against the above attribution, we show that the known
phenomenology, including a discrepancy of about one order of magnitude with the
predictions of Bose- Einstein condensation, is in good agreement with the
electromagnetic coherence induced on the alkali atoms by the long range
electrodynamic interactions. We also predict that for temperatures lower than a
well defined $T_{BEC}$, the state predicted by Bose and Einstein coexists with
the new coherent electrodynamic state.

19
The categories of this paper are: eess
7
The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph
35
The categories of this paper are: mtrl-th
14
The categories of this paper are: math-ph
11
The categories of this paper are: hep-lat
10
The categories of this paper are: q-bio
25
The categories of this paper are: patt-sol
30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys
28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ
34
The categories of this paper are: chem-ph
24
The categories of this paper are: dg-ga
9
The categories of this paper are: nlin
16
The categories of this paper are: stat