https://doi.org/10.1140/epjc/s10052-013-2344-7
Regular Article - Theoretical Physics
Spherical collapse of a unified dark fluid with constant adiabatic sound speed
1
Institute of Theoretical Physics, School of Physics & Optoelectronic Technology, Dalian University of Technology, Dalian, 116024, P.R. China
2
College of Advanced Science & Technology, Dalian University of Technology, Dalian, 116024, P.R. China
* e-mail: lxxu@dlut.edu.cn
Received:
5
November
2012
Revised:
11
January
2013
Published online:
8
March
2013
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 α, we show the non-linear 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 α and B s make the structure formation faster and earlier.
© Springer-Verlag Berlin Heidelberg and Società Italiana di Fisica, 2013
