Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Multicomponent exciton gas in cuprous oxide: cooling behaviour and the
  role of Auger decay   In this paper we present a hydrodynamic model to describe the dynamics of
para- and orthoexcitons in cuprous oxide at ultralow temperatures inside a
stress induced potential trap. We take into account the finite lifetime of the
excitons, the excitation process and exciton-phonon as well as exciton-exciton
interaction. Furthermore, we model the two-body loss mechanism assuming an
Auger-like effect and compare it to an alternative explanation which relies on
the formation of biexcitons. We discuss in detail the influence on the
numerical results and compare the predictions to experimental data.

21
The categories of this paper are: adap-org
32
The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin
34
The categories of this paper are: chem-ph
18
The categories of this paper are: econ
26
The categories of this paper are: bayes-an
37
The categories of this paper are: supr-con
28
The categories of this paper are: alg-geom
10
The categories of this paper are: q-bio
16
The categories of this paper are: stat
36
The categories of this paper are: cmp-lg
15
The categories of this paper are: nucl-ex
20
The categories of this paper are: acc-phys
6
The categories of this paper are: astro-ph
12
The categories of this paper are: nucl-th
11
The categories of this paper are: hep-lat