Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dark energy and neutrino mass constraints from weak lensing, supernova,
  and relative galaxy ages   We use the current weak lensing data to constrain the equation of state of
dark energy $w$ and the total mass of massive neutrinos $\sum m_{\nu}$. The
constraint on $w$ would be weak if only the current weak lensing data are used.
With the addition of other observational data such as the type Ia supernovae,
baryon acoustic oscillation, and the high redshift Hubble parameter data $H(z)$
derived from relative galaxy ages to break the degeneracy, the result is
significantly improved. For the pure $w$CDM model without massive neutrinos, we
find $w=-1.00^{+0.10}_{-0.12}$. For the $w$CDM model with the massive neutrino
component, we show that the constraint on $w$ is almost unchanged, there is
very little degeneracy between $w$ and $\sum m_{\nu}$. After marginalizing over
other parameters, we obtain the probability distribution function of $\sum
m_{\nu}$, and find that the upper limit is $\sum m_{\nu} \leq 0.8$ eV at 95.5%
confidence level for the combined data sets. Our constraints of $w$ and $\sum
m_{\nu}$ are both compatible and comparable with the constraints obtained from
the WMAP 5-year data.

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The categories of this paper are: plasm-ph
24
The categories of this paper are: dg-ga
18
The categories of this paper are: econ
32
The categories of this paper are: atom-ph
12
The categories of this paper are: nucl-th
0
The categories of this paper are: hep-ph
13
The categories of this paper are: quant-ph
35
The categories of this paper are: mtrl-th
2
The categories of this paper are: math
14
The categories of this paper are: math-ph
7
The categories of this paper are: hep-th
16
The categories of this paper are: stat
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The categories of this paper are: chao-dyn
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The categories of this paper are: eess
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The categories of this paper are: q-fin
27
The categories of this paper are: comp-gas