http://arxiv.org/abs/1607.05123
We calculate the observed galaxy power spectrum for the thawing class of scalar field models taking into account various general relativistic corrections that occur on very large scales. As we need to consider the fluctuations in scalar field on these large scales, the general relativistic corrections in thawing scalar field models are distinctly different from $\Lambda$CDM and the difference can be upto $15-20\%$ at some scales. Also there is an interpolation between suppression and enhancement of power in scalar field models compared to the $\Lambda$CDM model on smaller scales and this happens in a specific redshift range that is quite robust to the form of the scalar field potentials or the choice of different cosmological parameters. This can be useful to distinguish scalar field models from $\Lambda$CDM with future optical/radio surveys.
B. Dinda and A. Sen
Tue, 19 Jul 16
64/68
Comments: 11 pages, MNRAS style, comments welcome
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