Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Testing cosmological models with large-scale power modulation using
  microwave background polarization observations   We examine the degree to which observations of large-scale cosmic microwave
background (CMB) polarization can shed light on the puzzling large-scale power
modulation in maps of CMB anisotropy. We consider a phenomenological model in
which the observed anomaly is caused by modulation of large-scale primordial
curvature perturbations, and calculate Fisher information and error forecasts
for future polarization data, constrained by the existing CMB anisotropy data.
Because a significant fraction of the available information is contained in
correlations with the anomalous temperature data, it is essential to account
for these constraints. We also present a systematic approach to finding a set
of normal modes that maximize the available information, generalizing the
well-known Karhunen-Loeve transformation to take account of the constraints
from the temperature data. A polarization map covering at least $\sim 60\%$ of
the sky should be able to provide a $3\sigma$ detection of modulation at the
level favored by the temperature data. A significant fraction of the
information in such a data set is contained in the single mode that optimally
encapsulates the signal due to temperature-polarization correlation.

13
The categories of this paper are: quant-ph
37
The categories of this paper are: supr-con
33
The categories of this paper are: plasm-ph
20
The categories of this paper are: acc-phys
22
The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int
18
The categories of this paper are: econ
32
The categories of this paper are: atom-ph
28
The categories of this paper are: alg-geom
3
The categories of this paper are: physics
10
The categories of this paper are: q-bio
26
The categories of this paper are: bayes-an
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The categories of this paper are: hep-ex
25
The categories of this paper are: patt-sol
14
The categories of this paper are: math-ph
1
The categories of this paper are: cs