Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Disformally Coupled Quintessence   In this work we consider a cosmological model in which dark energy is
portrayed by a canonical scalar field which is allowed to couple to the other
species by means of a disformal transformation of the metric. We revisit the
current literature by assuming that the disformal function in the metric
transformation can depend both on the scalar field itself and on its
derivatives, encapsulating a wide variety of scalar-tensor theories. This
generalisation also leads to new and richer phenomenology, explaining some of
the features found in previously studied models. We present the background
equations and perform a detailed dynamical analysis, from where new disformal
fixed points emerge, that translate into novel cosmological features. These
include early scaling regimes between the coupled species and broader stability
parameter regions. However, viable cosmological models seem to have suppressed
disformal late-time contributions.

9
The categories of this paper are: nlin
17
The categories of this paper are: q-fin
7
The categories of this paper are: hep-th
16
The categories of this paper are: stat
0
The categories of this paper are: hep-ph
12
The categories of this paper are: nucl-th
20
The categories of this paper are: acc-phys
36
The categories of this paper are: cmp-lg
32
The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn
3
The categories of this paper are: physics
10
The categories of this paper are: q-bio
21
The categories of this paper are: adap-org
34
The categories of this paper are: chem-ph
19
The categories of this paper are: eess
37
The categories of this paper are: supr-con