Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Temporal and spatio-temporal correlation functions for trapped Bose
  gases   Density correlations unambiguously reveal the quantum nature of matter. Here,
we study correlations between measurements of density in cold-atom clouds at
different times at one position, and also at two separated positions. We take
into account the effects of finite-size and -duration measurements made by
light beams passing through the atom cloud. We specialise to the case of Bose
gases in harmonic traps above critical temperature, for weakly-perturbative
measurements. For overlapping measurement regions, shot-noise correlations
revive after a trap oscillation period. For non-overlapping regions, bosonic
correlations dominate at long times, and propagate at finite speeds. Finally,
we give a realistic measurement protocol for performing such experiments.

16
The categories of this paper are: stat
28
The categories of this paper are: alg-geom
8
The categories of this paper are: hep-ex
34
The categories of this paper are: chem-ph
19
The categories of this paper are: eess
5
The categories of this paper are: gr-qc
17
The categories of this paper are: q-fin
23
The categories of this paper are: solv-int
29
The categories of this paper are: funct-an
1
The categories of this paper are: cs
11
The categories of this paper are: hep-lat
3
The categories of this paper are: physics
10
The categories of this paper are: q-bio
12
The categories of this paper are: nucl-th
26
The categories of this paper are: bayes-an
25
The categories of this paper are: patt-sol