Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Testing coupled dark energy models with their cosmological background
  evolution   We consider a cosmology in which dark matter and a quintessence scalar field
responsible for the acceleration of the Universe are allowed to interact.
Allowing for both conformal and disformal couplings, we perform a global
analysis of the constraints on our model using Hubble parameter measurements,
baryon acoustic oscillation distance measurements, and a Supernovae Type Ia
data set. We find that the additional disformal coupling relaxes the conformal
coupling constraints. Moreover we show that, at the background level, a
disformal interaction within the dark sector is preferred to both $\Lambda$CDM
and uncoupled quintessence, hence favouring interacting dark energy.

34
The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex
13
The categories of this paper are: quant-ph
21
The categories of this paper are: adap-org
24
The categories of this paper are: dg-ga
3
The categories of this paper are: physics
20
The categories of this paper are: acc-phys
14
The categories of this paper are: math-ph
29
The categories of this paper are: funct-an
22
The categories of this paper are: chao-dyn
4
The categories of this paper are: cond-mat
36
The categories of this paper are: cmp-lg
15
The categories of this paper are: nucl-ex
23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
16
The categories of this paper are: stat