Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The dark side of curvature   Geometrical tests such as the combination of the Hubble parameter H(z) and
the angular diameter distance d_A(z) can, in principle, break the degeneracy
between the dark energy equation of state parameter w(z), and the spatial
curvature Omega_k in a direct, model-independent way. In practice, constraints
on these quantities achievable from realistic experiments, such as those to be
provided by Baryon Acoustic Oscillation (BAO) galaxy surveys in combination
with CMB data, can resolve the cosmic confusion between the dark energy
equation of state parameter and curvature only statistically and within a
parameterized model for w(z). Combining measurements of both H(z) and d_A(z) up
to sufficiently high redshifts around z = 2 and employing a parameterization of
the redshift evolution of the dark energy equation of state are the keys to
resolve the w(z)-Omega_k degeneracy.

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The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio
15
The categories of this paper are: nucl-ex
4
The categories of this paper are: cond-mat
37
The categories of this paper are: supr-con
12
The categories of this paper are: nucl-th
19
The categories of this paper are: eess
36
The categories of this paper are: cmp-lg
29
The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc
1
The categories of this paper are: cs
23
The categories of this paper are: solv-int
13
The categories of this paper are: quant-ph
27
The categories of this paper are: comp-gas
14
The categories of this paper are: math-ph
22
The categories of this paper are: chao-dyn