Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the shortcomings of the Shapiro delay tests of the equivalence
  principle   There are several shortcomings in the "standard" Shapiro delay tests of the
equivalence principle on cosmological scales \cite{minazzoli:2019pr}. Although
many people in the community already acknowledged this in the literature, and
proposed alternative ways to compare potential Shapiro delays over cosmological
scales -- e.g. \cite{bartlett:2021pr,hashimoto:2021pr} and references therein
-- papers are still submitted to journals with the usual issues.

11
The categories of this paper are: hep-lat
14
The categories of this paper are: math-ph
9
The categories of this paper are: nlin
18
The categories of this paper are: econ
31
The categories of this paper are: ao-sci
36
The categories of this paper are: cmp-lg
21
The categories of this paper are: adap-org
29
The categories of this paper are: funct-an
35
The categories of this paper are: mtrl-th
6
The categories of this paper are: astro-ph
32
The categories of this paper are: atom-ph
8
The categories of this paper are: hep-ex
22
The categories of this paper are: chao-dyn
2
The categories of this paper are: math
19
The categories of this paper are: eess
37
The categories of this paper are: supr-con