Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Cosmological window onto the string axiverse and the supersymmetry
  breaking scale   In the simplest picture, the masses of string axions populating the axiverse
depend on two parameters: the supersymmetry breaking scale $M_{\rm susy}$ and
the action $S$ of the string instantons responsible for breaking the axion
shift symmetry. In this work, we explore whether cosmological data can be used
to probe these two parameters. Adopting string-inspired flat priors on
$\log_{10}M_{\rm susy}$ and $S$, and imposing that $M_{\rm susy}$ be
sub-Planckian, we find $S=198\pm28$. These bounds suggest that cosmological
data complemented with string-inspired priors select a quite narrow axion mass
range within the axiverse, $\log_{10}(m_a/{\rm eV}) = -21.5^{+1.3}_{-2.3}$. We
find that $M_{\rm susy}$ remains unconstrained due to a fundamental parameter
degeneracy with $S$. We explore the significant impact of other choices of
priors on the results, and we comment on similar findings in recent previous
literature.

8
The categories of this paper are: hep-ex
33
The categories of this paper are: plasm-ph
3
The categories of this paper are: physics
36
The categories of this paper are: cmp-lg
29
The categories of this paper are: funct-an
37
The categories of this paper are: supr-con
11
The categories of this paper are: hep-lat
32
The categories of this paper are: atom-ph
1
The categories of this paper are: cs
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin
12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol
30
The categories of this paper are: q-alg
19
The categories of this paper are: eess
21
The categories of this paper are: adap-org