Superstrings and dark matter

Abstract

We point out that the spectrum and interactions of light states of the heterotic string indicate a string scale close to the GUT scale, and a mass generating scale for the gravitationally interacting states around 10^9 GeV if these states contribute a large fraction to dark matter.

Comments: 7 pages, 1 figure, uses iopconf1.sty, to appear in the proceedings of DARK98, Heidelberg (Germany) 20-24 July 1998