The evolution of cosmic density perturbations around grand unified strings

Details The evolution of cosmic density perturbations around grand unified strings The evolution of cosmic density perturbations around grand unified strings

Jul 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983phlb..126..437t&link_type=abstract

Physics Letters B, Volume 126, Issue 6, p. 437-440.

Physics

28

Scientific paper

The gravitational field produced by closed loops of string is calculated in the weak field approximation. It is shown that the gravitationally effective mass is exactly equal to the mass of the string, in contrast to the case of static string which produces no gravitational field. The rate of growth of density perturbations around spinning loops is calculated and it is shown that these could well give rise to galaxies. It also suggested that large-scale filamentary structures of the type recently observed by Giovanelli and Haynes are predicted in the string theory.

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