Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Probing Ricci dark energy model with perturbations by using WMAP
  seven-year cosmic microwave background measurements, BAO and Type Ia
  supernovae   In this paper, we investigate the Ricci dark energy model with perturbations
through the joint constraints of current cosmological data sets from dynamical
and geometrical perspectives. We use the full cosmic microwave background
information from WMAP seven-year data, the baryon acoustic oscillations from
the Sloan Digital Sky Survey and the Two Degree Galaxy Redshift Survey, and
type Ia supernovae from the Union2 compilation of the Supernova Cosmology
Project Collaboration. A global constraint is performed by employing the Markov
chain Monte Carlo method. With the best-fitting results, we show the
differences of cosmic microwave background power spectra and background
evolutions for the cosmological constant model and Ricci dark energy model with
perturbations.

32
The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin
23
The categories of this paper are: solv-int
12
The categories of this paper are: nucl-th
31
The categories of this paper are: ao-sci
8
The categories of this paper are: hep-ex
20
The categories of this paper are: acc-phys
37
The categories of this paper are: supr-con
11
The categories of this paper are: hep-lat
28
The categories of this paper are: alg-geom
36
The categories of this paper are: cmp-lg
33
The categories of this paper are: plasm-ph
7
The categories of this paper are: hep-th
2
The categories of this paper are: math
3
The categories of this paper are: physics
4
The categories of this paper are: cond-mat