Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Can the Existence of Dark Energy Be Directly Detected?   The majority of astronomers and physicists accept the reality of dark energy
and also believe that it can only be studied indirectly through observation of
the motions of stars and galaxies. In this paper I open the experimental
question of whether it is possible to directly detect dark energy through the
presence of dark energy density. Two thirds of this paper outlines the major
aspects of dark energy density as now comprehended by the astronomical and
physics community. The final third summarizes various proposals for direct
detection of dark energy density or its possible effects. At this time I do not
have a fruitful answer to the question: Can the Existence of Dark Energy Be
Directly Detected?

7
The categories of this paper are: hep-th
5
The categories of this paper are: gr-qc
26
The categories of this paper are: bayes-an
36
The categories of this paper are: cmp-lg
23
The categories of this paper are: solv-int
16
The categories of this paper are: stat
37
The categories of this paper are: supr-con
19
The categories of this paper are: eess
13
The categories of this paper are: quant-ph
29
The categories of this paper are: funct-an
35
The categories of this paper are: mtrl-th
14
The categories of this paper are: math-ph
15
The categories of this paper are: nucl-ex
22
The categories of this paper are: chao-dyn
10
The categories of this paper are: q-bio
31
The categories of this paper are: ao-sci