Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Constraining the interaction between dark matter and dark energy with
  CMB data   We briefly discuss the intriguing case of a phenomenological
non-gravitational coupling in the dark sector, where the interaction is
parameterized as an energy transfer either from dark matter to dark energy or
the opposite. We show that a non-zero coupling with an energy flow from the
latter to the former leads to a full reconciliation of the tension between
high- and low-redshift observations present in the standard cosmological model.

32
The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn
26
The categories of this paper are: bayes-an
29
The categories of this paper are: funct-an
33
The categories of this paper are: plasm-ph
20
The categories of this paper are: acc-phys
15
The categories of this paper are: nucl-ex
3
The categories of this paper are: physics
25
The categories of this paper are: patt-sol
36
The categories of this paper are: cmp-lg
17
The categories of this paper are: q-fin
23
The categories of this paper are: solv-int
27
The categories of this paper are: comp-gas
13
The categories of this paper are: quant-ph
35
The categories of this paper are: mtrl-th
31
The categories of this paper are: ao-sci