Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Is the Dynamics of Tracking Dark Energy Detectable?   We highlight the unexpected impact of nucleosynthesis and other early
universe constraints on the detectability of tracking quintessence dynamics at
late times, showing that such dynamics may well be invisible until the
unveiling of the Stage-IV dark energy experiments (DUNE, JDEM, LSST, SKA).
Nucleosynthesis forces |w'(0)| < 0.2 for the models we consider and strongly
limits potential deviations from LCDM. Surprisingly, the standard CPL
parametrisation, w(z) = w_0 + w_a z/(1+z), cannot match the nucleosynthesis
bound for minimally coupled tracking scalar fields. Given that such models are
arguably the best-motivated alternatives to a cosmological constant these
results may significantly impact future cosmological survey design and imply
that dark energy may well be dynamical even if we do not detect any dynamics in
the next decade.

10
The categories of this paper are: q-bio
1
The categories of this paper are: cs
22
The categories of this paper are: chao-dyn
15
The categories of this paper are: nucl-ex
4
The categories of this paper are: cond-mat
19
The categories of this paper are: eess
24
The categories of this paper are: dg-ga
11
The categories of this paper are: hep-lat
21
The categories of this paper are: adap-org
36
The categories of this paper are: cmp-lg
20
The categories of this paper are: acc-phys
30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph
3
The categories of this paper are: physics
23
The categories of this paper are: solv-int
12
The categories of this paper are: nucl-th