English

The effects of anti-correlation on gravitational clustering

Astrophysics 2009-11-06 v1

Abstract

We use non-linear scaling relations (NSRs) to investigate the effects arising from the existence of negative correlations on the evolution of gravitational clustering in an expanding universe. It turns out that such anti-correlated regions have important dynamical effects on {\it all} scales. In particular, the mere existence of negative values for the linear two-point correlation function \xibL\xib_L over some range of scales starting from l=Lol = L_o, implies that the non-linear correlation function is bounded from above at {\it all} scales x<Lox < L_o. This also results in the relation \xibx3\xib \propto x^{-3}, at these scales, at late times, independent of the original form of the correlation function. Current observations do not rule out the existence of negative \xib\xib for 200h1 200 h^{-1} Mpc \la\xib\la1000h1\la \xib \la 1000 h^{-1} Mpc; the present work may thus have relevance for the real Universe. The only assumption made in the analysis is the {\it existence} of the NSR; the results are independent of the form of the NSR as well as of the stable clustering hypothesis.

Keywords

Cite

@article{arxiv.astro-ph/0101562,
  title  = {The effects of anti-correlation on gravitational clustering},
  author = {Nissim Kanekar and T. Padmanabhan},
  journal= {arXiv preprint arXiv:astro-ph/0101562},
  year   = {2009}
}

Comments

11 pages, 6 figures. Accepted for publication in MNRAS