Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dark energy reflections in the redshift-space quadrupole   We show that the redshift-space quadrupole will be a powerful tool for
constraining dark energy even if the baryon oscillations are missing from the
usual monopole power spectrum and even if bias is scale- and time-dependent. We
calculate the accuracy with which a next-generation galaxy survey based on KAOS
will measure the quadrupole power spectrum, which gives the leading
anisotropies in the power spectrum in redshift space due to the linear
velocity, Finger of God and Alcock-Paczynski effects. Combining the monopole
and quadrupole power spectra breaks the degeneracies between the multiple bias
parameters and dark energy both in the linear and nonlinear regimes and, in the
complete absence of baryon oscillations ($\Omega_b=0$), leads to a roughly 500%
improvement in constraints on dark energy compared with those from the monopole
spectrum alone. As a result the worst case - with no baryon oscillations - has
dark energy errors only mildly degraded relative to the ideal case, providing
insurance on the robustness of next-generation galaxy survey constraints on
dark energy.

26
The categories of this paper are: bayes-an
20
The categories of this paper are: acc-phys
9
The categories of this paper are: nlin
28
The categories of this paper are: alg-geom
21
The categories of this paper are: adap-org
16
The categories of this paper are: stat
22
The categories of this paper are: chao-dyn
15
The categories of this paper are: nucl-ex
35
The categories of this paper are: mtrl-th
11
The categories of this paper are: hep-lat
18
The categories of this paper are: econ
36
The categories of this paper are: cmp-lg
24
The categories of this paper are: dg-ga
23
The categories of this paper are: solv-int
5
The categories of this paper are: gr-qc
1
The categories of this paper are: cs