Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Beyond spontaneously broken symmetry in Bose-Einstein condensates   Spontaneous symmetry breaking (SSB) for Bose-Einstein condensates cannot
treat phase off-diagonal effects, and thus not explain Bell inequality
violations. We describe another situation that is beyond a SSB treatment: an
experiment where particles from two (possibly macroscopic) condensate sources
are used for conjugate measurements of the relative phase and populations.
Off-diagonal phase effects are characterized by a "quantum angle" and observed
via "population oscillations", signaling quantum interference of
macroscopically distinct states (QIMDS).

37
The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn
17
The categories of this paper are: q-fin
31
The categories of this paper are: ao-sci
14
The categories of this paper are: math-ph
36
The categories of this paper are: cmp-lg
7
The categories of this paper are: hep-th
19
The categories of this paper are: eess
35
The categories of this paper are: mtrl-th
10
The categories of this paper are: q-bio
25
The categories of this paper are: patt-sol
1
The categories of this paper are: cs
24
The categories of this paper are: dg-ga
8
The categories of this paper are: hep-ex
16
The categories of this paper are: stat
6
The categories of this paper are: astro-ph