Cosmic-String–Seeded Structure Formation

P. P. Avelino, E. P. S. Shellard, J. H. P. Wu, and B. Allen
Phys. Rev. Lett. 81, 2008 – Published 7 September 1998
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Abstract

We describe the results of high-resolution numerical simulations of string-induced structure formation in open universes and those with a nonzero cosmological constant. For models with Γ=Ωh=0.10.2 and a cold dark matter background, we show that the linear density fluctuation power spectrum has both an amplitude at 8h1Mpc, σ8, and an overall shape which are consistent within uncertainties with those currently inferred from galaxy surveys. The cosmic string scenario with hot dark matter requires a strongly scale-dependent bias in order to agree with observations.

  • Received 8 December 1997

DOI:https://doi.org/10.1103/PhysRevLett.81.2008

©1998 American Physical Society

Authors & Affiliations

P. P. Avelino1, E. P. S. Shellard2, J. H. P. Wu2, and B. Allen3

  • 1Centro de Astrofisica, Universidade do Porto, Rua do Campo Alegre 823, 4150 Porto, Portugal
  • 2Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Silver Street, Cambridge CB3 9EW, United Kingdom
  • 3University of Wisconsin, Milwaukee, Wisconsin 53201

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Vol. 81, Iss. 10 — 7 September 1998

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