Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum law of rare events for systems with Bose-Einstein statistics   In classical physics the joint probability of a number of individually rare
independent events is given by the Poisson distribution. It describes, for
example, unidirectional transfer of population between the densely and sparsely
populated states of a classical two-state system. We derive a quantum version
of the law for a large number of non-interacting systems (particles) obeying
Bose-Einstein statistics. The classical low is significantly modified by
quantum interference, which allows, among other effects, for the counter flow
of particles back into the densely populated state. Suggested observation of
this classically forbidden counter flow effect can be achieved with modern
laser-based techniques used for manipulating and trapping of cold atoms.

22
The categories of this paper are: chao-dyn
20
The categories of this paper are: acc-phys
17
The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph
16
The categories of this paper are: stat
28
The categories of this paper are: alg-geom
12
The categories of this paper are: nucl-th
21
The categories of this paper are: adap-org
10
The categories of this paper are: q-bio
25
The categories of this paper are: patt-sol
18
The categories of this paper are: econ
5
The categories of this paper are: gr-qc
6
The categories of this paper are: astro-ph
0
The categories of this paper are: hep-ph
1
The categories of this paper are: cs
35
The categories of this paper are: mtrl-th