Cosmological Perturbations from Cosmic Strings
天体物理学
2010-11-01 v1
摘要
Some aspects of the theory of cosmological perturbations from cosmic strings and other topological defects are outlined, with particular reference to a simple example: a spatially flat CDM-dominated universe. The conserved energy-momentum pseudo-tensor is introduced, and the equation for the density perturbation derived from it. It is shown how the scaling hypothesis for defect evolution results in a Harrison-Zel'dovich spectrum for wavelengths well inside the horizon.
引用
@article{arxiv.astro-ph/9412079,
title = {Cosmological Perturbations from Cosmic Strings},
author = {Mark Hindmarsh},
journal= {arXiv preprint arXiv:astro-ph/9412079},
year = {2010}
}
备注
LaTeX, 6pp. From Proceedings of `Trends in Astroparticle Physics', Stockholm, Sweden 22-25 September 1994, edited by L. Bergstr\"om, P. Carlson, P.O. Hulth and H. Snellman (to be published in Nucl.~Phys~B, Proceedings Supplements Section)