Density Fluctuations from Strings and Galaxy Formation

Alexander Vilenkin; Qaisar Shafi

doi:10.1103/PhysRevLett.51.1716

Density Fluctuations from Strings and Galaxy Formation

Alexander Vilenkin and Qaisar Shafi

Phys. Rev. Lett. 51, 1716 – Published 31 October 1983

Abstract

The spectra of density fluctuations caused by strings in a universe dominated either by baryons, neutrinos, or axions are presented. Realistic scenarios for galaxy formation seem possible in all three cases. Examples of grand unified theories which lead to strings with the desired mass scales are given.

Received 20 June 1983

DOI:https://doi.org/10.1103/PhysRevLett.51.1716

Authors & Affiliations

Alexander Vilenkin

Physics Department, Tufts University, Medford, Massachusetts 02155

Qaisar Shafi^*

National Aeronautics and Space Administration Goddard Space Flight Center, Greenbelt, Maryland 20771, and International Center for Theoretical Physics, Trieste, Italy