Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Cosmic microwave background and large-scale structure constraints on a
  simple quintessential inflation model   We derive constraints on a simple quintessential inflation model, based on a
spontaneously broken Phi^4 theory, imposed by the Wilkinson Microwave
Anisotropy Probe three-year data (WMAP3) and by galaxy clustering results from
the Sloan Digital Sky Survey(SDSS). We find that the scale of symmetry breaking
must be larger than about 3 Planck masses in order for inflation to generate
acceptable values of the scalar spectral index and of the tensor-to-scalar
ratio. We also show that the resulting quintessence equation-of-state can
evolve rapidly at recent times and hence can potentially be distinguished from
a simple cosmological constant in this parameter regime.

7
The categories of this paper are: hep-th
5
The categories of this paper are: gr-qc
4
The categories of this paper are: cond-mat
29
The categories of this paper are: funct-an
34
The categories of this paper are: chem-ph
26
The categories of this paper are: bayes-an
3
The categories of this paper are: physics
24
The categories of this paper are: dg-ga
33
The categories of this paper are: plasm-ph
9
The categories of this paper are: nlin
19
The categories of this paper are: eess
2
The categories of this paper are: math
15
The categories of this paper are: nucl-ex
11
The categories of this paper are: hep-lat
28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ