1302.6637 (Lixin Xu)

Spherical Collapse of a Unified Dark Fluid with Constant Adiabatic Sound Speed    [PDF]

Lixin Xu

In this paper, we test the spherical collapse of a unified dark fluid (UDF) which has constant adiabatic sound speed. By choosing the different values of model parameters $B_s$ and $\alpha$, we show the nonlinear collapse for UDF and baryons which are considered for their formation of the large scale structure of our Universe. The analyzed results show that larger values of $\alpha$ and $B_s$ make the structure formation faster and earlier.

View original: http://arxiv.org/abs/1302.6637