Perturbative Growth of Cosmological Clustering. II. The Two-Point Correlation

@article{Bharadwaj1996PerturbativeGO,
  title={Perturbative Growth of Cosmological Clustering. II. The Two-Point Correlation},
  author={Somnath Bharadwaj},
  journal={The Astrophysical Journal},
  year={1996},
  volume={460},
  pages={28-50}
}
  • S. Bharadwaj
  • Published 19 November 1995
  • Physics
  • The Astrophysical Journal
We use the BBGKY hierarchy equations to calculate, perturbatively, the lowest order nonlinear correction to the two-point correlation and the pair velocity for Gaussian initial conditions in a critical density matter-dominated cosmological model. We compare our results with the results obtained using the hydrodynamic equations that neglect pressure and find that the two match, indicating that there are no effects of multistreaming at this order of perturbation. We analytically study the effect… 

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